title: Caution with epidemiological data in relation to chronic opioid use.
authors.forename: Michael
authors.initials: M
authors.lastname: Keane
mesh_terms: 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
chemical_list: D000701:Analgesics, Opioid