Perinatal mortality in breech presentations.
D001724:Birth Weight; D001946:Breech Presentation; D036861:Delivery, Obstetric; D005260:Female; D005313:Fetal Death / Q000209:etiology*; D005865:Gestational Age; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D007751:Labor, Induced; D008423:Maternal Age; D010298:Parity; D011247:Pregnancy; D011248:Pregnancy Complications