David W Wetter

University of Texas MD Anderson Cancer Center, Houston, TX, United States

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Publications (182)571.4 Total impact

  • American journal of health behavior 01/2014; 38(31):41. · 1.31 Impact Factor
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    ABSTRACT: To examine whether stress or depressive symptoms mediated associations between perceived discrimination and multiple modifiable behavioral risk factors for cancer among 1363 African American adults. Nonparametric bootstrapping procedures, adjusted for sociodemographics, were used to assess mediation. Stress and depressive symptoms each mediated associations between discrimination and current smoking, and discrimination and the total number of behavioral risk factors for cancer. Depressive symptoms also mediated the association between discrimination and overweight/obesity (p values < .05). Discrimination may influence certain behavioral risk factors for cancer through heightened levels of stress and depressive symptoms. Interventions to reduce cancer risk may need to address experiences of discrimination, as well as the stress and depression they engender.
    American journal of health behavior 01/2014; 38(1):31-41. · 1.31 Impact Factor
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    ABSTRACT: Puerto Rico (PR) has a lower smoking prevalence than the United States (14.8% vs. 21.2%, respectively); nevertheless, the five leading causes of death are associated with smoking. There is a need to implement evidence-based tobacco control strategies in PR.
    Progress in community health partnerships : research, education, and action. 01/2014; 8(2):157-68.
  • 12/2013;
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    ABSTRACT: The reasons that some smokers find it harder to quit than others are unclear. Understanding how individual differences predict smoking cessation outcomes may allow the development of more successful personalized treatments for nicotine dependence. Theoretical models suggest that drug users might be characterized by increased sensitivity to drug cues and by reduced sensitivity to nondrug-related natural rewards. We hypothesized that baseline differences in brain sensitivity to natural rewards and cigarette-related cues would predict the outcome of a smoking cessation attempt. Using functional magnetic resonance imaging, we recorded prequit brain responses to neutral, emotional (pleasant and unpleasant), and cigarette-related cues from 55 smokers interested in quitting. We then assessed smoking abstinence, mood, and nicotine withdrawal symptoms over the course of a smoking cessation attempt. Using cluster analysis, we identified 2 groups of smokers who differed in their baseline responses to pleasant and cigarette-related cues in the posterior visual association areas, the dorsal striatum, and the medial and dorsolateral prefrontal cortex. Smokers who showed lower prequit levels of brain reactivity to pleasant stimuli than to cigarette-related cues were less likely to be abstinent 6 months after their quit attempt, and they had higher levels of negative affect over the course of the quit attempt. Smokers with blunted brain responses to pleasant, relative to cigarette related, stimuli had more difficulty quitting smoking. For these individuals, the lack of alternative forms of reinforcement when nicotine deprived might be an important factor underlying relapse. Normalizing these pathological neuroadaptations may help them achieve abstinence.
    Nicotine & Tobacco Research 12/2013; · 2.48 Impact Factor
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    ABSTRACT: Negative affect, alcohol consumption, and presence of others smoking have consistently been implicated as risk factors in smoking lapse and relapse. What is not known, however, is how these factors work together to affect smoking outcomes. This paper uses ecological momentary assessment (EMA) collected during the first 7 days of a smoking cessation attempt to test the individual and combined effects of high-risk triggers on smoking urge and lapse. Participants were 300 female smokers who enrolled in a study that tested an individually tailored smoking cessation treatment. Participants completed EMA, which recorded negative affect, alcohol consumption, presence of others smoking, smoking urge, and smoking lapse, for 7 days starting on their quit date. Alcohol consumption, presence of others smoking, and negative affect were, independently and in combination, associated with increase in smoking urge and lapse. The results also found that the relationship between presence of others smoking and lapse and the relationship between negative affect and lapse were moderated by smoking urge. The current study found significant individual effect of alcohol consumption, presence of other smoking, and negative affect on smoking urge and lapse. Combing the triggers increased smoking urge and the risk of lapse to varying degrees and the presence of all 3 triggers resulted in the highest urge and lapse risk.
    Nicotine & Tobacco Research 12/2013; · 2.48 Impact Factor
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    ABSTRACT: Because smoking has a profound impact on socioeconomic disparities in illness and death, it is crucial that vulnerable populations of smokers be targeted with treatment. The U.S. Public Health Service recommends that all patients be asked about their smoking at every visit and that smokers be given brief advice to quit and referred to treatment. Initiatives to facilitate these practices include the 5A's (ask, advise, assess, assist, arrange) and Ask-Advise-Refer (AAR). Unfortunately, primary care referrals are low, and most smokers referred fail to enroll. This study evaluated the efficacy of the Ask-Advise-Connect (AAC) approach to linking smokers with treatment in a large, safety net public healthcare system. The study design was a pair-matched group-randomized trial with two treatment arms. Ten safety net clinics in Houston TX. Clinics were randomized to AAC (n=5; intervention) or AAR (n=5; control). Licensed vocational nurses (LVNs) were trained to assess and record the smoking status of all patients at all visits in the electronic health record. Smokers were given brief advice to quit. In AAC, the names and phone numbers of smokers who agreed to be connected were sent electronically to the Texas quitline daily, and patients were proactively called by the quitline within 48 hours. In AAR, smokers were offered a quitline referral card and encouraged to call on their own. Data were collected between June 2010 and March 2012 and analyzed in 2012. The primary outcome was impact, defined here as the proportion of identified smokers that enrolled in treatment. The impact (proportion of identified smokers who enrolled in treatment) of AAC (14.7%) was significantly greater than the impact of AAR (0.5%), t(4)=14.61, p=0.0001, OR=32.10 (95% CI=16.60, 62.06). The AAC approach to aiding smoking cessation has tremendous potential to reduce tobacco-related health disparities. This study is registered at ISRCTN78799157.
    American journal of preventive medicine 12/2013; 45(6):737-41. · 4.24 Impact Factor
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    ABSTRACT: To examine whether stress and depressive symptoms mediated relationships of perceived discrimination and self-rated health among African Americans. A nonparametric bootstrapping procedure was used to assess mediation, controlling for sociodemographic variables, among 1406 cohort study adults (age=45.5±12.6, 25.1% male). Greater discrimination was associated with poorer self-rated health (β =-.010, SE=.003, p = .001). Stress and depressive symptoms were each significant mediators of this relationship in single and multiple mediator models (ps ≤ 05). Perceived discrimination may contribute to poorer self-rated health among African Americans through heightened levels of stress and depression. Interventions addressing these mechanisms might help reduce the impact of discrimination on health. Definitive results await longitudinal study designs to assess causal pathways.
    American journal of health behavior 11/2013; 37(6):745-54. · 1.31 Impact Factor
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    ABSTRACT: To evaluate a conceptual model of the psychosocial pathways linking socioeconomic status and body mass index (BMI) among smokers. A latent variable modeling approach was used to evaluate the interrelationships among socioeconomic status, perceived neighborhood disadvantage, social support, negative affect, and BMI among smokers recruited from the Houston metropolitan area (N = 424). A total of 42.4% of participants were obese, with the highest prevalence of obesity among Latinos followed by African Americans. Across all racial/ethnic groups, perceived neighborhood disadvantage, social support, and negative affect functioned as pathways linking socioeconomic status and BMI. Findings indicate the need for interventions that target obesity among socioeconomically disadvantaged smokers and provide potential intervention targets for the prevention and treatment of obesity.
    American journal of health behavior 09/2013; 37(5):587-98. · 1.31 Impact Factor
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    ABSTRACT: Some studies using ecological momentary assessment (EMA) have revealed an association between craving for cigarettes and relapse. It is, therefore, important to understand the correlates of craving during smoking cessation. Attentional bias to smoking cues is a potential correlate of craving, but it has not previously been assessed using EMA during smoking cessation. Smokers enrolled in a research smoking cessation study were offered the opportunity to take part in an EMA study. Volunteers carried around a personal digital assistant (PDA) for the first week of their quit attempt. They completed up to 4 random assessments (RAs) per day as well as assessments when they experienced a temptation to smoke and when they relapsed. Craving for cigarettes was assessed with a single item (1-7 scale). Attentional bias was assessed with a smoking Stroop task (a reaction time task) at every other assessment, as was self-reported attention to cigarettes. Data were available from 119 participants. Across 882 assessments, participants exhibited a significant smoking Stroop effect. Linear mixed models revealed a significant between-subject association between craving and the smoking Stroop effect. Individuals with higher levels of craving exhibited greater attentional bias. The within-subject association was not significant. Similar results were obtained for the relationship between self-reported attention to cigarettes and attentional bias. Attentional bias can be assessed in the natural environment using EMA during smoking cessation, and attentional bias is a correlate of craving during the early stages of a quit attempt.
    Nicotine & Tobacco Research 07/2013; · 2.48 Impact Factor
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    ABSTRACT: Objective: We evaluated whether childhood trauma moderated the treatment effect on depression and smoking outcomes in pregnant smokers. Method: The sample included pregnant smokers participating in a randomized trial evaluating the efficacy of a 10-session interpersonally focused therapy-cognitive behavioral analysis system of psychotherapy (CBASP)-versus a time-matched health and wellness control (HW) for smoking cessation and depression reduction. Women (N = 248) who completed the Childhood Trauma Questionnaire (CTQ) were included. On average, women were 25 years old (SD = 5.91) and smoked 10 (SD = 6.9) cigarettes per day. Depressive symptoms were assessed with the Center for Epidemiological Studies Depression Scale (CES-D), and women had an average score of 21 (SD = 11.03). Seventy-six percent of women had experienced some form of moderate to severe childhood trauma as assessed by the CTQ. Results: In women with a history of moderate to severe childhood trauma, there was a dose-response association of treatment on depression outcome through 6 months postpartum; those with increasing amounts of childhood trauma benefitted more from CBASP, whereas those in the HW condition did not. Childhood trauma did not moderate the treatment effect on abstinence, although increasing amounts of trauma were associated with reduced likelihood of abstinence at 6 months posttreatment. Conclusions: An interpersonally focused therapy may be beneficial for the treatment of depression during the prenatal period in pregnant smokers with childhood trauma histories, and such treatment becomes increasingly more important with cumulative trauma experience. Childhood trauma increases risk for cessation failure in pregnant smokers. (PsycINFO Database Record (c) 2013 APA, all rights reserved).
    Journal of Consulting and Clinical Psychology 06/2013; · 4.85 Impact Factor
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    ABSTRACT: Abstract Background: Most women in the United States do not meet minimum recommendations for physical activity or fruit/vegetable consumption. Thus, many are overweight/obese and are at increased risk for cancer morbidity and mortality. This study investigated women's perceptions about the importance of physical activity and a healthy diet in preventing cancer, perceptions of engaging in these behaviors, and whether or not the behaviors met cancer prevention recommendations. Method: A cross-sectional, national, random-digit-dialed telephone survey was conducted with 800 women, ages 18 and older. The response rate was 24.5%. Measures assessed demographics, perceived health status, beliefs about the role of physical activity and diet in cancer prevention, perceived engagement in these behaviors, and actual behaviors. Results: Only 9.9% of women who reported eating a healthy diet met minimum fruit and vegetable recommendations; 39.7% of women who reported regular physical activity met the minimum recommendation. Analyses adjusted for demographics indicated that low education was associated with reporting regular physical activity to prevent cancer, yet failing to meet the minimum recommendation (odds ratio [OR]=0.90, 95% confidence interval [CI]: 0.82-0.98, p=0.01). Racial/ethnic minority status was marginally significantly associated with reporting eating a healthy diet to prevent cancer, yet failing to consume sufficient fruits and vegetables (OR=2.94, 95% CI: 0.99-8.71, p=0.05). Conclusions: Most women who reported eating a healthy diet and being physically active to prevent cancer failed to meet the minimum cancer prevention recommendations. Furthermore, low socioeconomic status and racial/ethnic minority women may be particularly vulnerable to discrepancies between beliefs and behavior.
    Journal of Women s Health 06/2013; 22(6):487-93. · 1.42 Impact Factor
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    ABSTRACT: Objectives. We examined associations between health literacy and predictors of smoking cessation among 402 low-socioeconomic status (SES), racially/ethnically diverse smokers. Methods. Data were collected as part of a larger study evaluating smoking health risk messages. We conducted multiple linear regression analyses to examine relations between health literacy and predictors of smoking cessation (i.e., nicotine dependence, smoking outcome expectancies, smoking risk perceptions and knowledge, self-efficacy, intentions to quit or reduce smoking). Results. Lower health literacy was associated with higher nicotine dependence, more positive and less negative smoking outcome expectancies, less knowledge about smoking health risks, and lower risk perceptions. Associations remained significant (P < .05) after controlling for demographics and SES-related factors. Conclusions. These results provide the first evidence that low health literacy may serve as a critical and independent risk factor for poor cessation outcomes among low-socioeconomic status, racially/ethnically diverse smokers. Research is needed to investigate potential mechanisms underlying this relationship. (Am J Public Health. Published online ahead of print May 16, 2013: e1-e7. doi:10.2105/AJPH.2012.301062).
    American Journal of Public Health 05/2013; · 3.93 Impact Factor
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    ABSTRACT: Objectives. The purpose of this study was to address current gaps in the literature by examining the associations of fast food restaurant (FFR) density around the home and FFR proximity to the home, respectively, with body mass index (BMI) among a large sample of African American adults from Houston, Texas. Methods. We used generalized linear models with generalized estimating equations to examine associations of FFR density at 0.5-, 1-, 2-, and 5-mile road network buffers around the home with BMI and associations of the closest FFR to the home with BMI. All models were adjusted for a range of individual-level covariates and neighborhood socioeconomic status. We additionally investigated the moderating effects of household income on these relations. Data were collected from December 2008 to July 2009. Results. FFR density was not associated with BMI in the main analyses. However, FFR density at 0.5, 1, and 2 miles was positively associated with BMI among participants with lower incomes (P ≤ .025). Closer FFR proximity was associated with higher BMI among all participants (P < .001), with stronger associations emerging among those of lower income (P < .013) relative to higher income (P < .014). Conclusions. Additional research with more diverse African American samples is needed, but results supported the potential for the fast food environment to affect BMI among African Americans, particularly among those of lower economic means. (Am J Public Health. Published online ahead of print May 16, 2013: e1-e7. doi:10.2105/AJPH.2012.301140).
    American Journal of Public Health 05/2013; · 3.93 Impact Factor
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    ABSTRACT: To examine whether health locus of control mediated relations of self-reported neighborhood vigilance and biochemically verified, continuous short-term smoking abstinence among 200 smokers enrolled in a cohort study. A nonparametric bootstrapping procedure was used to assess mediation. Health locus of control-chance mediated relations between neighborhood vigilance and smoking abstinence in analyses adjusted for sociodemographics and tobacco dependence (p < .05). Greater vigilance was associated with greater attributions that health was affected by chance, which was associated with a lower likelihood of smoking abstinence. Results suggest that neighborhood perceptions influence residents' attributions for health outcomes, which can affect smoking abstinence.
    American journal of health behavior 05/2013; 37(3):334-41. · 1.31 Impact Factor
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    ABSTRACT: BACKGROUND: Low socioeconomic status (SES) exacerbates the high rate of smoking relapse in women following childbirth. PURPOSE: This study examined multiple models of potential mechanisms linking SES and postpartum smoking relapse among women who quit smoking due to pregnancy. METHODS: Participants were 251 women enrolled in a randomized clinical trial of a new postpartum smoking relapse prevention intervention. Four models of the prepartum mechanisms linking SES and postpartum smoking relapse were evaluated using a latent variable modeling approach. RESULTS: Each of the hypothesized models were a good fit for the data. As hypothesized, SES indirectly influenced postpartum smoking relapse through increased prepartum negative affect/stress, reduced sense of agency, and increased craving for cigarettes. However, the model that included craving as the sole final pathway between SES and relapse demonstrated superior fit when compared with all other models. CONCLUSIONS: Findings have implications for future interventions that aim to reduce postpartum relapse.
    Annals of Behavioral Medicine 04/2013; 45(2):180-191. · 4.20 Impact Factor
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    ABSTRACT: IMPORTANCE Given the actions of varenicline tartrate and bupropion hydrochloride sustained-release (SR) on neurobiological targets related to affect and reward, it is thought that the modulation of nicotine withdrawal symptoms may contribute to their effectiveness. OBJECTIVE To assess the relative efficacy of varenicline and bupropion SR plus intensive counseling on smoking cessation and emotional functioning. DESIGN AND SETTING Placebo-controlled randomized clinical trial at a university medical center. PARTICIPANTS In total, 294 community volunteers who wanted to quit smoking. INTERVENTIONS Twelve weeks of varenicline, bupropion SR, or placebo plus intensive smoking cessation counseling (10 sessions, for a total of approximately 240 minutes of counseling). MAIN OUTCOME MEASURES Prolonged abstinence from smoking and weekly measures of depression, negative affect, and other symptoms of nicotine withdrawal. RESULTS Significant differences were found in abstinence at the end of treatment and through the 3-month postquit follow-up visit, favoring both active medications compared with placebo. At the 6-month postquit follow-up visit, only the varenicline vs placebo comparison remained significant. Varenicline use was also associated with a generalized suppression of depression and reduced smoking reward compared with the other treatments, while both active medications improved concentration, reduced craving, and decreased negative affect and sadness compared with placebo, while having little effect (increase or decrease) on anxiety and anger. No differences were noted in self-reported rates of neuropsychiatric adverse events. CONCLUSIONS AND RELEVANCE In a community sample, varenicline exerts a robust and favorable effect on smoking cessation relative to placebo and may have a favorable (suppressive) effect on symptoms of depression and other affective measures, with no clear unfavorable effect on neuropsychiatric adverse events. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00507728.
    JAMA Psychiatry 03/2013; · 12.01 Impact Factor
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    ABSTRACT: BACKGROUND: Smoking, poor diet, and physical inactivity account for as much as 60% of cancer risk. Latinos experience profound disparities in health behaviors, as well as the cancers associated with them. Currently, there is a dearth of controlled trials addressing these health behaviors among Latinos. Further, to the best of our knowledge, no studies address all three behaviors simultaneously, are culturally sensitive, and are guided by formative work with the target population. Latinos represent 14% of the U.S. population and are the fastest growing minority group in the country. Efforts to intervene on these important lifestyle factors among Latinos may accelerate the elimination of cancer-related health disparities.Methods/design: The proposed study will evaluate the efficacy of an evidence-based and theoretically-driven Motivation And Problem Solving (MAPS) intervention, adapted and culturally-tailored for reducing cancer risk related to smoking, poor diet, and physical inactivity among high-risk Mexican-origin smokers who are overweight/obese (n = 400). Participants will be randomly assigned to one of two groups: Health Education (HE) or MAPS (HE + up to 18 MAPS counseling calls over 18 months). Primary outcomes are smoking status, servings of fruits and vegetables, and both self-reported and objectively measured physical activity. Outcome assessments will occur at baseline, 6 months, 12 months, and 18 months. DISCUSSION: The current study will contribute to a very limited evidence base on multiple risk factor intervention studies on Mexican-origin individuals and has the potential to inform both future research and practice related to reducing cancer risk disparities. An effective program targeting multiple cancer risk behaviors modeled after chronic care programs has the potential to make a large public health impact because of the dearth of evidence-based interventions for Latinos and the extended period of support that is provided in such a program.Trial registration: National Institutes of Health Clinical Trials Registry # http://www.clinicaltrials.gov/ct2/show/NCT01504919.
    BMC Public Health 03/2013; 13(1):237. · 2.08 Impact Factor
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    ABSTRACT: IMPORTANCE Several national health care-based smoking cessation initiatives have been recommended to facilitate the delivery of evidence-based treatments, such as quitline (telephone-based tobacco cessation services) assistance. The most notable examples are the 5 As (Ask, Advise, Assess, Assist, Arrange) and Ask. Advise. Refer. (AAR) programs. Unfortunately, rates of primary care referrals to quitlines are low, and most referred smokers fail to call for assistance. OBJECTIVE To evaluate a new approach-Ask-Advise-Connect (AAC)-designed to address barriers to linking smokers with treatment. DESIGN A pair-matched, 2-treatment-arm, group-randomized design in 10 family practice clinics in a single metropolitan area. Five clinics were randomized to the AAC (intervention) and 5 to the AAR (control) conditions. In both conditions, clinic staff were trained to assess and record the smoking status of all patients at all visits in the electronic health record, and smokers were given brief advice to quit. In the AAC clinics, the names and telephone numbers of smokers who agreed to be connected were sent electronically to the quitline daily, and patients were called proactively by the quitline within 48 hours. In the AAR clinics, smokers were offered a quitline referral card and encouraged to call on their own. All data were collected from February 8 through December 27, 2011. SETTING Ten clinics in Houston, Texas. PARTICIPANTS Smoking status assessments were completed for 42 277 patients; 2052 unique smokers were identified at AAC clinics, and 1611 smokers were identified at AAR clinics. INTERVENTIONS Linking smokers with quitline-delivered treatment. MAIN OUTCOME MEASURE Impact was based on the RE-AIM (Reach, Efficacy, Adoption, Implementation, and Maintenance) conceptual framework and defined as the proportion of all identified smokers who enrolled in treatment. RESULTS In the AAC clinics, 7.8% of all identified smokers enrolled in treatment vs 0.6% in the AAR clinics (t4 = 9.19 [P < .001]; odds ratio, 11.60 [95% CI, 5.53-24.32]), a 13-fold increase in the proportion of smokers enrolling in treatment. CONCLUSIONS AND RELEVANCE The system changes implemented in the AAC approach could be adopted broadly by other health care systems and have tremendous potential to reduce tobacco-related morbidity and mortality.
    JAMA Internal Medicine 02/2013; · 10.58 Impact Factor
  • International Journal of Women's Health 02/2013;

Publication Stats

3k Citations
571.40 Total Impact Points

Institutions

  • 1999–2014
    • University of Texas MD Anderson Cancer Center
      • • Health Disparities Research
      • • Department of Behavioral Science
      Houston, TX, United States
  • 2012–2013
    • University of Texas Health Science Center at Tyler
      Tyler, Texas, United States
    • University of Texas at Austin
      • School of Social Work
      Austin, Texas, United States
  • 2007–2012
    • University of Texas Health Science Center at Houston
      • Division of Management, Policy and Community Health
      Houston, TX, United States
  • 2002–2012
    • Baylor College of Medicine
      • Department of Pediatrics
      Houston, Texas, United States
  • 2010
    • University of North Texas at Dallas
      Dallas, Texas, United States
  • 1994–2010
    • University of Wisconsin, Madison
      • • Department of Medicine
      • • Center for Tobacco Research and Intervention
      Madison, MS, United States
  • 2009
    • Uniformed Services University of the Health Sciences
      • Department of Medical & Clinical Psychology
      Bethesda, MD, United States
  • 2008
    • University of Puerto Rico, Medical Sciences Campus
      San Juan, San Juan, Puerto Rico
  • 2005
    • The Menninger Clinic, Inc.
      United States
  • 2002–2005
    • Xavier University
      • Department of Psychology
      Cincinnati, OH, United States
    • Group Health Cooperative
      • Group Health Research Institute
      Seattle, Washington, United States
  • 2000
    • University of Washington Seattle
      • Department of Health Services
      Seattle, WA, United States