Caution with epidemiological data in relation to chronic opioid use.
Keane
Michael
M
D000701:Analgesics, Opioid / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D009021:Morphine Dependence / Q000453:epidemiology / Q000209:etiology; D010146:Pain / Q000188:drug therapy* / Q000453:epidemiology*; D010147:Pain Measurement
D000701:Analgesics, Opioid