[Patch is preferred].
D000279:Administration, Cutaneous; D000284:Administration, Oral; D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000009:adverse effects; D002648:Child; D002908:Chronic Disease; D006801:Humans; D010146:Pain / Q000188:drug therapy / Q000451:nursing* / Q000523:psychology; D017060:Patient Satisfaction; D016896:Treatment Outcome
D000701:Analgesics, Opioid