title: [The dangers of sex].
authors.affiliation: HYKS:n iho- ja sukupuolitautien klinikka Meilahdentie 2 00250 Helsinki.
authors.forename: Annamari
authors.initials: A
authors.lastname: Ranki
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D016358:Contact Tracing / Q000331:legislation & jurisprudence; D005387:Finland / Q000453:epidemiology; D006801:Humans; D012736:Sex Education; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control*