Is lack of evidence the problem?
Ballantyne
Jane C
JC
Penn Pain Medicine Center, Hospital of the University of Pennsylvania, 1840 South St, Philadelphia, PA 19146, USA.
D000701:Analgesics, Opioid / Q000009:adverse effects / Q000627:therapeutic use*; D002908:Chronic Disease; D019317:Evidence-Based Medicine; D017408:Guidelines as Topic; D006801:Humans; D010146:Pain / Q000188:drug therapy*; D012106:Research; D014481:United States
D000701:Analgesics, Opioid