title: Words, thoughts, and things.
mesh_terms: D000773:Anesthesia, Obstetrical / Q000266:history; D036861:Delivery, Obstetric; D005260:Female; D005858:Germany; D049673:History, 20th Century; D006801:Humans; D009774:Obstetrics / Q000266:history; D011247:Pregnancy; D014481:United States