title: [Random substance abuse tests have also preventive effects].
authors.affiliation: Helsingborgs lasarett. health.carrier@telia.com
authors.forename: Nils
authors.initials: N
authors.lastname: Lundin
mesh_terms: D000293:Adolescent; D002648:Child; D006801:Humans; D012572:School Health Services; D015813:Substance Abuse Detection; D019966:Substance-Related Disorders / Q000517:prevention & control / Q000652:urine; D013548:Sweden