Breech deliveries.
D001946:Breech Presentation; D002585:Cesarean Section / Q000401:mortality*; D036861:Delivery, Obstetric / Q000401:mortality*; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007746:Labor Presentation; D007744:Obstetric Labor Complications / Q000401:mortality; D011247:Pregnancy