Joseph B. DeLee and the practice of preventive obstetrics.
D005260:Female; D049673:History, 20th Century; D006801:Humans; D008427:Maternal Health Services / Q000266:history; D008428:Maternal Mortality; D008880:Midwifery / Q000266:history; D007744:Obstetric Labor Complications / Q000517:prevention & control; D009772:Obstetrical Forceps / Q000266:history; D009774:Obstetrics / Q000266:history*; D011247:Pregnancy; D014481:United States