The hazards of the breech.
D001720:Birth Injuries / Q000209:etiology; D001946:Breech Presentation; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007746:Labor Presentation; D009774:Obstetrics / Q000266:history*; D011247:Pregnancy; D006113:United Kingdom