Opioid therapy and chronic low back pain.
Troncale
J A
JA
D000701:Analgesics, Opioid / Q000009:adverse effects* / Q000627:therapeutic use*; D002908:Chronic Disease; D005194:Family Practice; D006801:Humans; D017116:Low Back Pain / Q000188:drug therapy*; D019966:Substance-Related Disorders / Q000209:etiology
D000701:Analgesics, Opioid