[Study of a sample of students 16 to 20 years of age].
D000293:Adolescent; D000328:Adult; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D012749:Sexually Transmitted Diseases / Q000517:prevention & control*; D013334:Students; D011795:Surveys and Questionnaires
Indagine su un campione di studenti di età compresa tra 16 e 20 anni.