Comparison of analgesia and anesthesia for labor between the university hospitals of the U.S.A. and Japan including our own.
D000698:Analgesia / Q000379:methods*; D000773:Anesthesia, Obstetrical / Q000379:methods*; D005260:Female; D006785:Hospitals, University; D006801:Humans; D007564:Japan; D007743:Labor, Obstetric; D011247:Pregnancy; D014481:United States