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Title
Epidemiology of preterm birth and its clinical subtypes.
Authors
Ananth CV; Vintzileos AM
Publication
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, 2006, Vol 19, Issue 12, p773