In vitro fertilization as a risk factor for transfusion after vaginal singleton delivery.
The journal of maternal-fetal & neonatal medicine: the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians (Impact Factor: 1.36). 12/2009; 22(12):1217-8. DOI:10.3109/14767050903029626
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