title: Substance abuse and schizophrenia: which comes first?
mesh_terms: D017668:Age of Onset; D017831:Diagnosis, Dual (Psychiatry) / Q000523:psychology; D006801:Humans; D012307:Risk Factors; D012559:Schizophrenia / Q000150:complications* / Q000175:diagnosis; D019966:Substance-Related Disorders / Q000150:complications* / Q000175:diagnosis / Q000523:psychology