title: [Adolescents, sex and health].
authors: Preben
authors: P
authors: Aavitsland
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway / Q000453:epidemiology; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000517:prevention & control; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control