Epidural clonidine.
D002908:Chronic Disease; D003000:Clonidine / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy*
D009020:Morphine; D003000:Clonidine