title: Response: providing relief, avoiding euphoria.
authors.forename: Dennis
authors.initials: D
authors.lastname: Paul
authors.forename: Maria A
authors.initials: MA
authors.lastname: Sullivan
authors.forename: Roger D
authors.initials: RD
authors.lastname: Weiss
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects* / Q000627:therapeutic use; D002908:Chronic Disease; D015897:Comorbidity; D003937:Diagnosis, Differential; D005059:Euphoria / Q000187:drug effects*; D006801:Humans; D009293:Opioid-Related Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control*; D010146:Pain / Q000188:drug therapy* / Q000453:epidemiology; D012307:Risk Factors; D055502:Secondary Prevention; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000534:rehabilitation*
chemical_list: D000701:Analgesics, Opioid