title: Street versions of opioids more potent and dangerous.
authors.forename: Roger
authors.initials: R
authors.lastname: Collier
mesh_terms: D000701:Analgesics, Opioid / Q000009:adverse effects*; D002170:Canada / Q000453:epidemiology; D006801:Humans; D013287:Illicit Drugs / Q000009:adverse effects*; D019966:Substance-Related Disorders / Q000150:complications* / Q000401:mortality
chemical_list: D000701:Analgesics, Opioid; D013287:Illicit Drugs