[To take action before the first time].
Poirson
E
E
D000293:Adolescent; D016497:Adolescent Health Services; D006801:Humans; D011322:Primary Prevention / Q000379:methods*; D013240:Stereotyping; D019966:Substance-Related Disorders / Q000451:nursing* / Q000517:prevention & control
Agir avant la première fois.