title: Comorbidity: A sign of the times.
authors.forename: R T
authors.initials: RT
authors.lastname: Pivik
mesh_terms: D002170:Canada / Q000453:epidemiology; D003072:Cognition Disorders / Q000139:chemically induced / Q000175:diagnosis / Q000453:epidemiology*; D015897:Comorbidity; D006801:Humans; D013287:Illicit Drugs / Q000009:adverse effects; D011619:Psychotropic Drugs / Q000009:adverse effects; D012307:Risk Factors; D012559:Schizophrenia / Q000175:diagnosis / Q000453:epidemiology*; D012940:Social Problems / Q000523:psychology / Q000706:statistics & numerical data*; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology
chemical_list: D013287:Illicit Drugs; D011619:Psychotropic Drugs