title: Extradural clonidine for postoperative pain relief.
authors.forename: T
authors.initials: T
authors.lastname: Nishikawa
mesh_terms: D000328:Adult; D002648:Child; D003000:Clonidine / Q000008:administration & dosage*; D006801:Humans; D007268:Injections, Epidural; D009020:Morphine / Q000008:administration & dosage; D010147:Pain Measurement; D010149:Postoperative Pain / Q000517:prevention & control*
chemical_list: D009020:Morphine; D003000:Clonidine