Sun Joo Kim

Soonchunhyang University, Onyang, Chungcheongnam-do, South Korea

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Publications (20)25.73 Total impact

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    ABSTRACT: Submucosal injection for endoscopic mucosal resection (EMR) may effect performing the prophylactic argon plasma coagulation (APC) of non-bleeding visible vessels on ulcer crater. The purpose of this study was to evaluate the clinical features of visible vessels in iatrogenic ulcers over time after prophylactic APC in colonic EMR. This study was designed as a prospective study. Between August and November 2013, a total of 40 patients who were admitted underwent prophylactic APC for non-bleeding visible vessels after colonic EMR. After confirming whether visible vessels were completely coagulated or not, the number of visible vessels in ulcers was counted over a specific time period, e.g. 1, 3, 5, or 7 min. The mean number of visible vessels was significantly higher at 5 min (0.85 ± 1.14) after EMR with prophylactic APC compared to 1 and 3 min (1 min: 0.28 ± 0.60, P < 0.001; 3 min: 0.65 ± 0.87, P = 0.02) and there was no significant difference between 5 and 7 min (P = 0.31). Multivariate analysis showed that the size of the iatrogenic ulcer after EMR was associated with the occurrence of visible vessels (ulcer size >1 vs. ≤0.5 cm: OR 27.32, 95 % CI 2.86-infinity). A 5-min observation of the ulcer may be advantageous for the assessment of visible vessels after performing colonic EMR with prophylactic APC, and large (>1 cm) iatrogenic ulcers were associated with the occurrence of visible vessels after colonic EMR.
    Digestive Diseases and Sciences 06/2015; DOI:10.1007/s10620-015-3725-6 · 2.55 Impact Factor
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    ABSTRACT: Background and AimsTherapeutic endoscopic retrograde cholangiopancreatography (ERCP) tends to require considerable air insufflation, which results in abdominal pain or distension. We investigated the efficacy of carbon dioxide (CO2) compared with air insufflation when using two different sedation protocols in therapeutic ERCP.Methods Patients who required therapeutic ERCP were randomly assigned to four groups based on preliminary data: air insufflation with balanced propofol sedation (BPS), air with propofol + opioid sedation (PS), CO2 with BPS, and CO2 with PS. Post-ERCP abdominal pain, distension and nausea by the 10-point visual analogue scale (VAS), and gas volume score (GVS) by the 4-point ordinal scale were measured according to the time interval. Overall satisfaction with sedation, sedation efficacy, and complications were also measured.ResultsThe CO2 with BPS group showed lowest mean VAS score for abdominal pain (immediately after recovery, P=0.002; and 3 h post-ERCP, P=0.047) and distension (immediately after recovery, P=0.018; 3 h post-ERCP, P<0.01; and 24 h post-ERCP, P=0.042). Overall satisfaction with sedation was greater in the CO2 with BPS group (P=0.005). Mean GVS at 2 h and 12 h post-ERCP was significantly lower in the CO2 with BPS group (P<0.05). There were no significant differences in procedure or sedation-related complications.ConclusionsCO2 with BPS showed the lowest VAS score for early abdominal pain, distension and GVS, and had a higher score for overall satisfaction for sedation.
    Digestive Endoscopy 01/2015; 79(5). DOI:10.1111/den.12448 · 1.99 Impact Factor
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    ABSTRACT: Inflammatory bowel disease is commonly accompanied by colonic dysmotility and causes changes in intestinal smooth muscle contractility. In this study, colonic smooth muscle contractility in a chronic inflammatory condition was investigated using smooth muscle tissues prepared from interleukin-10 knockout (IL-10(-/-)) mice. Prepared smooth muscle sections were placed in an organ bath system. Cholinergic and nitrergic neuronal responses were observed using carbachol and electrical field stimulation with L-NG-nitroarginine methyl ester (L-NAME). The expression of interstitial cells of Cajal (ICC) networks, muscarinic receptors, neuronal nitric oxide synthase (nNOS) and inducible nitric oxide synthase (iNOS) was observed via immunofluorescent staining. The spontaneous contractility and expression of ICC networks in the proximal and distal colon was significantly decreased in IL-10(-/-) mice compared to IL-10(+/+) mice. The contractility in response to carbachol was significantly decreased in the proximal colon of IL-10(-/-) mice compared to IL-10(+/+) mice, but no significant difference was found in the distal colon. In addition, the expression of muscarinic receptor type 2 was reduced in the proximal colon of IL-10(-/-) mice. The nictric oxide-mediated relaxation after electrical field stimulation was significantly decreased in the proximal and distal colon of IL-10(-/-) mice. In inflamed colon, the expression of nNOS decreased, whereas the expression of iNOS increased. These results suggest that damage to the ICC network and NOS system in the proximal and distal colon, as well as damage to the smooth muscle cholinergic receptor in the proximal colon may play an important role in the dysmotility of the inflamed colon.
    Journal of neurogastroenterology and motility 12/2014; 21(1). DOI:10.5056/jnm14008 · 2.70 Impact Factor
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    ABSTRACT: Background/Aims: There are few data supporting the diagnostic yield of brush cytology depending on the order of cytologic preparation method or the location or shape of tumors in biliary strictures. We investigated diagnostic yields and variations in brush cytology with direct smear and cell-block preparations according to sampling preparation sequence and tumor location and shape in biliary strictures. Methods: Patients who had undergone ERCP with tissue sampling between August 2009 and April 2013 were analyzed retrospectively. Group A was examined using brush cytology with direct smear followed by cell-block with or without biopsy, while the reverse order was performed for group B. Results: Among 138 enrolled patients, 92 patients (A: 36, B: 56) underwent both brush cytology with direct smear and cell-block preparations. No differences in sensitivity, specificity, or accuracy were observed according to the sampling preparation method and the location or shape of tumors in biliary strictures. The cellularity observed from brush cytology with direct smear was better than that from cell-block according to the location of the tumor (p<0.01). The diagnostic yield was increased in both groups with addition of an endobiliary biopsy. Conclusions: No difference in diagnostic accuracy was observed between the sequences of preparation for brush cytology with direct smear and cell-block techniques. Brush cytology showed better cellularity for diagnosis. (Korean J Gastroenterol 2014;63:223-230).
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 04/2014; 63(4):223-30. DOI:10.4166/kjg.2014.63.4.223
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    ABSTRACT: Follicular dendritic cell (FDC) sarcoma is an extremely rare malignant neoplasm arising from FDCs. The exact origin of FDCs remains unclear; both a hematopoietic lineage origin and a stromal cell derivation have been proposed. Proliferation of FDCs can lead to benign reactive lesions or generate neoplastic conditions. The lesions are most commonly found in lymph nodes and usually involve the head and neck area. Castleman's disease is a rare non-neoplasitic lymphoproliferative disorder. Rare cases of hyaline-vascular Castleman's disease have been associated with FDC sarcoma, but a clonal relationship has not been convincingly demonstrated. A pathway toward tumor evolution, beginning with hyperplasia and dysplasia of FDCs, has been proposed. Despite this known association between Castleman's disease and FDC sarcoma, there have only been few reported cases of sarcoma arising as a complication of pre-existing Castleman's disease, especially in abdominal lesions. We describe here a 51-year-old female with an FDC sarcoma arising from unicentric, hyaline-vascular type Castleman's disease in an intra-abdominal mass. Pathologically, the lesion showed a series of changes during the process of transformation from Castleman's disease to FDC sarcoma. (Korean J Gastroenterol 2013;62:131-134).
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 08/2013; 62(2):131-4. DOI:10.4166/kjg.2013.62.2.131
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    ABSTRACT: Brunner's gland hamartoma is a rare benign small bowel neoplasm and most lesions are small and asymptomatic. However, large hamartoma-related obstructive symptoms and hemorrhage related to tumor ulceration manifest as hematemesis or melena. The exact pathogenesis if these lesions is not well known, but they are thought to be frequently associated with Helicobacter pylori infections and chronic pancreatitis. We report the case of a 45-year-old man who presented with melena due to a large pedunculated Brunner's gland hamartoma arising from the pylorus. It was successfully removed by endoscopic mucosal resection with piecemeal technique because of too large tumor size for application of a conventional snare.
    Case Reports in Gastroenterology 05/2013; 7(2):304-7. DOI:10.1159/000354138
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    ABSTRACT: BACKGROUND AND AIM: Endoscopic biliary drainage (BD) is an effective palliative treatment for acute cholangitis. Transnasal endoscopy (TNE) using an ultra-slim endoscope can be less stressful and has limited hemodynamic effects compared with endoscopic retrograde cholangiography (ERC) using a conventional duodenoscope. Here, we evaluate the clinical usefulness of direct BD by TNE in critically ill patients with acute cholangitis who had undergone endoscopic sphincterotomy (ES) previously. METHODS: Twenty-three patients with severe-to-moderate acute cholangitis who had undergone ES previously were enrolled prospectively. BD was achieved by TNE, using an ultra-slim upper endoscope with a 5-Fr nasobiliary drainage catheter and/or a plastic stent. The technical and clinical success, as well as the safety, of the procedure were investigated. RESULTS: A total of 23 patients were enrolled, including 17 with bile duct stones. The severity of the cholangitis was severe in nine (39.1%) and moderate in 14 patients (60.9%). The technical success rate was 95.7% (22/23). Nasobiliary drainage was performed in 15 patients, a plastic stent was placed in three, and both treatments were used in four patients. In three patients, direct BD by TNE was achieved in the intensive care unit (ICU) without fluoroscopy. Direct cholangioscopy for distal CBD was performed in nine patients (40.9%), and three patients underwent immediate stone extraction under endoscopic visualization. Clinical improvement was achieved in 20/23 (87.0%) of patients. No significant procedure-related complications occurred. CONCLUSION: Direct BD by TNE may be useful in critically ill patients with severe-to-moderate acute cholangitis who had undergone ES previously.
    Journal of Gastroenterology and Hepatology 12/2012; 28(4). DOI:10.1111/jgh.12105 · 3.63 Impact Factor
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    ABSTRACT: A concise asymmetric total synthesis of (S)-dapoxetine from commercially available 3-chloropropiophenone is described. The key step includes a highly stereoselective amination of chiral benzylic ether, with the retention of stereochemistry, using chlorosulfonyl isocyanate.
    Tetrahedron Letters 07/2012; 53(28):3680–3682. DOI:10.1016/j.tetlet.2012.05.037 · 2.39 Impact Factor
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    ABSTRACT: Haddad syndrome is a form of neurocristopathy characterized by a combination of congenital central hypoventilation syndrome and Hirschsprung disease (HD). Although Haddad syndrome is extremely rare, awareness of the combination of long-segment HD in Haddad syndrome as well as radiographic manifestations may help to ensure a timely diagnosis as well as to facilitate optimal treatment of this unusual condition. We report a case of Haddad syndrome with long-segment, intestinal aganglionosis in a newborn infant. This report emphasizes the features of HD in children with Haddad syndrome and suggests that specific attention be given to its interpretation on plain radiographs.
    Clinical imaging 03/2012; 36(2):149-52. DOI:10.1016/j.clinimag.2011.08.014 · 0.60 Impact Factor
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    ABSTRACT: Acute colonic pseudo-obstruction (Ogilvie syndrome) associated with herpes zoster is extremely rare, and few cases have been reported. An 81-year-old woman diagnosed with herpes zoster was referred for accompanying colonic ileus. The diameter of the cecum was 7 cm and a computed tomographic scan showed no definite obstructive cause. Because the patient showed minimal improvement with conservative treatment, endoscopic colonic decompression was performed successfully. Previous studies revealed that the treatment of Ogilvie syndrome associated with herpes zoster does not differ from that of other conditions, and the role of the varicella-zoster virus in this syndrome is unclear. Here, we present the first case of Ogilvie syndrome associated with herpes zoster in Korea, which was improved by endoscopic colonic decompression.
    01/2012; 10(4):379. DOI:10.5217/ir.2012.10.4.379
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    ABSTRACT: Dysfunction of the gastrointestinal tract occurs in about 76% of patients who are diabetic for more than 10 years. Although diabetes-related dysfunctions of the stomach such as gastroparesis have been extensively studied over the recent years, studies about the mechanism underlying colonic symptoms in long-term diabetes models are rare. Therefore, the goal of our study was to clarify the nature of colonic dysfunction in a long-term diabetic rat model. The characteristics of colonic smooth muscle were investigated in Otsuka Long-Evans Tokushima Fatty (OLETF) rats, an animal model of type 2 diabetes. These results were compared to those obtained from Long-Evans Tokushima Otsuka (LETO) control rats. Spontaneous contractility of the proximal colon was significantly decreased in the diabetic rats compared to the controls, while the spontaneous contractility of the distal colon was not. The number of interstitial cells of Cajal networks in the proximal colon was greatly decreased in diabetic rats compared to the controls. Contractility of the proximal colon in response to carbachol, an acetylcholine receptor agonist, was significantly weaker in the diabetic rats. In addition, the degree of relaxation in response to nitric oxide in the proximal colon of diabetic rats also appeared to be attenuated. The results from our study suggest that the decrease of interstitial cells of Cajal network, cholinergic receptors, and neuronal nitric oxide synthase in the proximal colon plays important roles in diabetes-related dysfunction of colon.
    Journal of neurogastroenterology and motility 10/2011; 17(4):372-80. DOI:10.5056/jnm.2011.17.4.372 · 2.70 Impact Factor
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    ABSTRACT: Chagas' disease is caused by Trypanosoma cruzi, a protozoan parasite, which is transmitted by blood-sucking bugs or through blood transfusion or organ transplantation. It is endemic in Central and South America. The objective of this study was to compare the performance of immunochromatographic SD Bioline Chagas Ab Rapid (Standard Diagnostics, Korea) with three immunochromatographic kits for the detection of antibodies to T. cruzi. A total of 320 serum specimens (140 positive and 180 negative) from National Reference Laboratory for Chagas and Leishmaniasis (NRLCL, Honduras) were used for the evaluation of four different test kits: SD Bioline Chagas Ab Rapid, Chagas Stat-Pak Assay (Chembio Diagnositc Systems, USA), OnSite Chagas Ab Rapid test-Cassette (CTK Biotech, USA), and Trypanosoma Detect Rapid Test (InBios International, USA). The results of four kits were compared with those of NRLCL. Cross-reactivity with other parasites was also evaluated. Compared with the results of NRLCL, sensitivity and specificity were 99.3% and 100% for both of SD and Chembio kits, 97.2% and 100% for InBios kit, and 97.9% and 98.8% for CTK kit. None of other parasites showed cross-reactivity. SD Bioline Chagas Ab Rapid kit showed test results highly correlating with those of National Reference Laboratory for Chagas and Leishmaniasis. It can be used for a rapid detection of Chagas' disease in endemic region and monitoring the disease among overseas travelers in Korea.
    The Korean Journal of Laboratory Medicine 03/2009; 29(1):48-52. DOI:10.3343/kjlm.2009.29.1.48 · 1.31 Impact Factor
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    ABSTRACT: To investigate the relationship between post-endoscopic resection (ER) scars on magnifying endoscopy (ME) and the pathological diagnosis in order to validate the clinical significance of ME. From January, 2007 to June, 2008, 124 patients with 129 post-ER scar lesions were enrolled. Mucosal pit patterns on ME were compared with conventional endoscopy (CE) findings and histological results obtained from targeted biopsies. CE findings showed nodular scars (53/129), erythematous scars (85/129), and ulcerative scars (4/129). The post-ER scars were classified into four pit patterns of sulci and ridges on ME: (I) 47 round; (II) 54 short rod or tubular; (III) 19 branched or gyrus-like; and (IV) 9 destroyed pits. Sensitivity and specificity were 88.9% and 62.5%, respectively, by the presence of nodularity on CE. Erythematous lesions were high sensitivity (100%), but specificity was as low as 36.7%. The range of the positive predictive value (PPV) on CE was as low as 10.6%-25%. Nine type IV pit patterns were diagnosed as tumor lesions, and 120 cases of type I-III pit patterns revealed non-neoplastic lesions. Thus, the sensitivity, specificity, and the PPV of ME were 100%. ME findings can detect the presence of tumor in post-ER scar lesions, and make evident the biopsy target site in short-term follow-up. Further large-scale and long-term studies are needed to determine whether ME can replace endoscopic biopsy.
    World Journal of Gastroenterology 02/2009; 15(3):349-55. · 2.43 Impact Factor
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    ABSTRACT: The ideal diagnostic criteria of autoimmune pancreatitis (AIP) are still challenging. Therefore, we investigated the clinical features of AIP in Korea and assessed the clinical use of new Korean diagnostic criteria. We reviewed 67 patients with AIP enrolled in 16 hospitals via a multicenter study. The diagnosis was confirmed according to the Korean diagnostic criteria that included pancreatic imaging, laboratory findings, histopathology, and response to steroid. Mean age of the patients was 56 years, and 73% were men. Obstructive jaundice (52%) was the most common symptom, and 14 patients (21%) had other organ involvement. Fifty-four patients (81%) revealed diffuse swelling of the pancreas. Either immunoglobulin (Ig)G or IgG4 was elevated in 76%. According to the Korean criteria, 65 patients had definite diagnostic criteria, and 2 patients had probable criteria. Fifteen patients were fulfilled with image, serological, and histopathologic criteria, and 4 patients could be diagnosed with image and steroid responsiveness. Ten patients experienced recurrent attacks of AIP during the mean 20-month follow-up. Among 67 cases of AIP, either IgG or IgG4 was elevated in 76% of patients, and 14 patients (21%) had other organ involvement. New Korean diagnostic criteria are useful for diagnosis of AIP.
    Pancreas 12/2008; 37(4):377-85. DOI:10.1097/MPA.0b013e31817a0914 · 3.01 Impact Factor
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    ABSTRACT: Hydatid disease is a parasitic infestation caused by the larval form of the cestode worms Echinococcus. In humans, the most commonly affected organs are liver and lung. Most cysts remain clinically silent and are diagnosed incidentally or when complications occur. The incidence of hydatid disease is high in the Middle East, Australia, East and South Africa and Central Europe. In Korea, hydatid disease is rare and has been reported in a few cases. We experienced a case of multiple intraperitoneal cysts from ruptured hepatic hydatid cysts in a 35-year old man. His complaint was palpable abdominal mass and discomfort. Abdominal ultrasound and CT scan revealed multiple hepatic and intraperitoneal cysts. The surgical findings showed multiple cysts and daughter cysts. The pathologic finding of resected cyst was the characteristic pattern of outer thick laminated membrane and inner thin germinal layer. Albendazole was administrated for prophylatic purpose.
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 10/2007; 50(3):203-6.
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    ABSTRACT: Perforation of the gallbladder with cholecystohepatic communication is a rare cause of liver abscess. Because it is a rare entity, the treatment modality has not been fully established. We report for the first time a patient with an intrahepatic abscess due to gallbladder perforation successfully treated by endoscopic stent placement into the gallbladder who had a poor response to continuous percutaneous drainage.
    World Journal of Gastroenterology 04/2007; 13(9):1458-9. · 2.43 Impact Factor
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    ABSTRACT: Previously reported series suggested that the morbidity rate of internal surgical drainage procedure alone was about 15% and the mortality rate was less than 5% in patients with pancreatic pseudocysts. Recently, ultrasonography or CT-guided percutaneous drainage and endoscopic drainage techniques have created a new dimension of invasive, non-surgical treatment options for these patients. In the absence of prospective, randomized, controlled studies comparing outcomes of different pseudocysts drainage techniques, the decision as to which method should be employed often lies with local expertise and enthusiasm. In our experience, radiologic percutaneous drainage with subsequent transpapillary endoscopic drainage had a high success rate and was relatively less difficult which resulted in rapid clinical improvement. We report three cases of pancreatic pseudocysts treated with percutaneous drainage as a first-line treatment followed by endoscopic treatment.
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 03/2007; 49(2):100-5.
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    ABSTRACT: This study was done to evaluate the efficacy of rabeprazole (proton-pump-inhibitor) and ranitidine (H(2)-receptor antagonist) in the symptom relief and treatment of erosive esophagitis diagnosed by endoscopy. A total of 110 patients with typical gastroesophageal reflux disease (GERD) symptoms were enrolled in this multicenter study. They were randomized into rabeprazole group (53 patients) and ranitidine group (57 patients) respectively. The patients in rabeprazole group were given 10 mg of rabeprazole and ranitidine group received 300 mg of ranitidine before breakfast and dinner for 8 weeks. After the end of treatment, we evaluated the endoscopic healing rate of reflux esophagitis and symptomatic improvement. After 8 weeks of treatment, rabeprazole group showed significantly higher complete endoscopic cure rate than ranitidine group (86.8% [46/53] vs. 57.9% [33/57], p=0.001) and higher symptomatic improvement of heartburn (91.2% [31/34] vs. 76.2% [32/42], p=0.085), especially in the first 7 days (76.7% vs. 45.3%, p=0.008). Also, rabeprazole group showed significantly higher improvement of regurgitation symptom than ranitidine group (100% [35/35] vs. 83% [39/47], p=0.009). Both group showed no differences in the improvement of chest pain and globus sensation. All the adverse events (rabeprazole group 4 events vs. ranitidine group 3 events) were mild and there was no abnormality in laboratory test. In patients with GERD, rabeprazole 10 mg b.i.d. is superior to ranitidine 300 mg b.i.d. in healing of reflux esophagitis and resolving typical GERD symptoms. Rabeprazole is an effective and well-tolerated drug for GERD treatment.
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 02/2006; 47(1):15-21.
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    ABSTRACT: Splenic artery aneurysms are the most common visceral artery aneurysms, which are usually found incidentally. The most common complication of splenic artery aneurysms is spontaneous rupture into the peritoneal cavity, which leads to acute peritonitis and shock. Less commonly, it may rupture directly into the stomach, small bowel or pancreatic duct and may present with acute gastrointestinal hemorrhage. We report a rare case of the ruptured splenic artery aneurysm, presenting as acute massive hematochezia which was treated with transcatheter embolization.
    The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi 12/2004; 44(5):288-91.
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    ABSTRACT: Helicobacter pylori (H. pylori) has been considered a definitive carcinogen in gastric cancer. Telomerase is activated in gastric cancer and some premalignant gastric lesions, including intestinal metaplasia (IM). In this study, we evaluated the relationships of both H. pylori infection and telomerase activity with endoscopic and histologic features in IM. The effects of H. pylori eradication on endoscopic, histologic and biochemical changes were evaluated. Endoscopic biopsies were obtained from 43 patients with IM for rapid urease, histologic and telomerase tests. The endoscopic and histologic features, H. pylori infection and telomerase were assessed. After H. pylori eradication, 15 patients were re-evaluated and compared after 4 months. Thirty-four (79.1%) patients were infected with H. pylori. The incidence of H. pylori infection was borderline correlated to the severity of IM (p = 0.076). Telomerase was elevated in eight (18.6%) patients. Telomerase tends to be high in subtype III and endoscopic grade III of IM. After H. pylori eradication, endoscopic extent (p = 0.039) and histologic severity (p = 0.074) showed improvements, and telomerase decreased significantly (p = 0.0001). Our data suggest that telomerase is associated with the severity and extent of IM and that H. pylori eradication improves the endoscopic and histologic features in IM, and decreases telomerase activity. H. pylori eradication can be considered one of the methods to prevent gastric cancer in patients with H. pylori-infected IM. Further long-term and large-scaled study will be needed.
    The Korean Journal of Internal Medicine 01/2003; 17(4):227-33. DOI:10.3904/kjim.2002.17.4.227

Publication Stats

79 Citations
25.73 Total Impact Points

Institutions

  • 2003–2015
    • Soonchunhyang University
      • College of Medicine
      Onyang, Chungcheongnam-do, South Korea
  • 2011–2014
    • Keimyung University
      • Dongsan Medical Center
      Sŏul, Seoul, South Korea
  • 2012
    • Sungkyunkwan University
      • School of Pharmacy
      Sŏul, Seoul, South Korea
    • Catholic University of Korea
      • Department of Pediatrics
      Sŏul, Seoul, South Korea
  • 2004–2012
    • Soon Chun Hyang University Hospital
      • Department of Gastroenterology
      Sŏul, Seoul, South Korea
  • 2009
    • Gyeongsang National University
      • Department of Laboratory Medicine
      Shinshū, Gyeongsangnam-do, South Korea