From the Centers for Disease Control and Prevention. Selected behaviors that increase risk for HIV infection, other sexually transmitted diseases, and unintended pregnancy among high school students--United States, 1991.
D000293:Adolescent; D000294:Adolescent Behavior; D003075:Coitus; D017280:Condoms / Q000706:statistics & numerical data; D003267:Contraception / Q000706:statistics & numerical data; D005260:Female; D015658:HIV Infections / Q000209:etiology*; D006801:Humans; D008297:Male; D011247:Pregnancy; D011275:Pregnancy, Unwanted; D012309:Risk-Taking; D012749:Sexually Transmitted Diseases / Q000209:etiology*; D014481:United States