Changes in sexual behaviors among high school students.
Constantine
Norman A
NA
D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology; D003268:Contraception Behavior / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000523:psychology; D000297:Psychology, Adolescent; D012309:Risk-Taking; D021841:Safe Sex; D012736:Sex Education / Q000379:methods; D012725:Sexual Behavior / Q000523:psychology; D014481:United States / Q000453:epidemiology