Epidural morphine for analgesia after caesarean section.
D002585:Cesarean Section; D005260:Female; D006801:Humans; D007278:Injections, Spinal; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*; D011247:Pregnancy; D012119:Respiration / Q000187:drug effects*
D009020:Morphine