title: Estimating prevalence of problematic drug use: comments on Frischer et al.
authors.forename: John Martin
authors.initials: JM
authors.lastname: Corkery
mesh_terms: D062787:Drug Overdose / Q000401:mortality; D006801:Humans; D015995:Prevalence; D019966:Substance-Related Disorders / Q000401:mortality*; D006113:United Kingdom / Q000453:epidemiology