HIV instruction and selected HIV-risk behaviors among high school students--United States, 1988-1991.
D000293:Adolescent; D015658:HIV Infections / Q000517:prevention & control / Q000523:psychology; D006266:Health Education; D006801:Humans; D012309:Risk-Taking; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D014481:United States