title: Opioids for non-cancer pain.
authors.forename: N M
authors.initials: NM
authors.lastname: Gajraj
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects*; D002908:Chronic Disease; D006801:Humans; D010146:Pain / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D000701:Analgesics, Opioid