title: Classic pages in obstetrics and gynecology.
mesh_terms: D005260:Female; D006176:Gynecology / Q000266:history; D049673:History, 20th Century; D006801:Humans; D009774:Obstetrics / Q000266:history; D010928:Placental Lactogen / Q000266:history; D011247:Pregnancy
chemical_list: D010928:Placental Lactogen