Adolescent sexual involvement: time for primary prevention.
Genuis
S J
SJ
Genuis
S K
SK
D000293:Adolescent; D000294:Adolescent Behavior; D005260:Female; D006801:Humans; D008297:Male; D009656:North America / Q000453:epidemiology; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012736:Sex Education; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000453:epidemiology* / Q000517:prevention & control