John Whitridge Williams and academic obstetrics in America.
D004501:Education, Medical / Q000266:history; D005260:Female; D006176:Gynecology / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009774:Obstetrics / Q000266:history*; D011247:Pregnancy; D011295:Prenatal Care; D013782:Textbooks as Topic / Q000266:history; D014481:United States