title: Drug usage: an experimental comparison of three assessment conditions.
mesh_terms: D001290:Attitude; D003219:Confidentiality; D004812:Epidemiologic Methods; D006801:Humans; D007406:Interview, Psychological; D012650:Self Disclosure; D019966:Substance-Related Disorders / Q000453:epidemiology*; D011795:Surveys and Questionnaires