The continuing problem of pain: a discussion paper.
D000758:Anesthesia; D000767:Anesthesia, Epidural; D000776:Anesthesiology / Q000193:education; D006801:Humans; D059408:Pain Management; D010148:Intractable Pain / Q000628:therapy; D010166:Palliative Care; D010817:Physician-Patient Relations; D013727:Terminal Care