Teens cite illicit drugs as major worry, see marijuana as gateway.
D000293:Adolescent; D005260:Female; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D002189:Marijuana Abuse / Q000523:psychology; D000297:Psychology, Adolescent; D019966:Substance-Related Disorders / Q000523:psychology
D013287:Illicit Drugs