Intrinsic hazard of breech presentation.
D001034:Apgar Score; D001946:Breech Presentation; D002585:Cesarean Section / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D011247:Pregnancy; D012189:Retrospective Studies; D012306:Risk