[Current findings on the studies of the history of anesthesiology (8)--Erwin Von Baelz and obstetrical anesthesia].
D000773:Anesthesia, Obstetrical / Q000266:history*; D000776:Anesthesiology / Q000266:history; D005858:Germany / Q000208:ethnology; D049672:History, 19th Century; D049673:History, 20th Century; D007564:Japan