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