HIV-related knowledge and behaviors among high school students--selected U.S. sites, 1989.
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control / Q000635:transmission; D000293:Adolescent; D000294:Adolescent Behavior; D001294:Attitude to Health; D005260:Female; D015658:HIV Infections / Q000517:prevention & control / Q000635:transmission*; D006266:Health Education / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D012494:Sampling Studies; D013334:Students; D011795:Surveys and Questionnaires; D014481:United States / Q000453:epidemiology