title: Zero effects of drug prevention programs: issues and solutions.
authors: California State University, Los Angeles, USA.
authors: J H
authors: JH
authors: Brown
authors: I G
authors: IG
authors: Kreft
mesh_terms: D000293:Adolescent; D016497:Adolescent Health Services / Q000458:organization & administration; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D016730:Program Development / Q000592:standards; D015397:Program Evaluation; D019966:Substance-Related Disorders / Q000517:prevention & control*; D014481:United States