title: Iko Safika on "Failures in substance use surveys" by Timothy P. Johnson.
authors.affiliation: Survey Research Laboratory, Chicago, Illinois 60607, USA. isafik1@uic.edu
authors.forename: Iko
authors.initials: I
authors.lastname: Safika
mesh_terms: D004812:Epidemiologic Methods; D006306:Health Surveys / Q000379:methods*; D006801:Humans; D019966:Substance-Related Disorders / Q000453:epidemiology*