title: Problem behavior of adolescents.
authors.forename: C E
authors.initials: CE
authors.lastname: Irwin
authors.forename: S A
authors.initials: SA
authors.lastname: Ryan
mesh_terms: D000293:Adolescent; D002908:Chronic Disease / Q000209:etiology*; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D012307:Risk Factors; D014481:United States