Opioids in chronic non-malignant pain.
Eriksen
J
J
D000701:Analgesics, Opioid / Q000009:adverse effects*; D002908:Chronic Disease; D003718:Denmark; D004333:Drug Administration Routes; D004334:Drug Administration Schedule; D004361:Drug Tolerance / Q000502:physiology; D006801:Humans; D009293:Opioid-Related Disorders / Q000209:etiology / Q000517:prevention & control* / Q000523:psychology*; D010146:Pain / Q000188:drug therapy*
D000701:Analgesics, Opioid