Patterns and correlates of initial and subsequent drug use among adolescents.
D000293:Adolescent; D000294:Adolescent Behavior; D000367:Age Factors; D000428:Alcohol Drinking; D005260:Female; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D004364:Pharmaceutical Preparations; D012907:Smoking; D019966:Substance-Related Disorders / Q000453:epidemiology*
D013287:Illicit Drugs; D004364:Pharmaceutical Preparations