Analgesia after haemorrhoidectomy.
Severn
A M
AM
Khwaja
H T
HT
D015360:Analgesia, Epidural; D000763:Anesthesia, Caudal; D006484:Hemorrhoids / Q000601:surgery*; D006801:Humans; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000517:prevention & control*
D009020:Morphine