title: [Segmental effect of epidural morphine analgesia].
mesh_terms: D000005:Abdomen / Q000601:surgery; D000698:Analgesia; D000767:Anesthesia, Epidural; D006801:Humans; D009020:Morphine; D010149:Postoperative Pain / Q000188:drug therapy; D013997:Time Factors
chemical_list: D009020:Morphine