Risk behaviors for HIV transmission among intravenous-drug users not in drug treatment--United States, 1987-1989.
D000328:Adult; D005260:Female; D015658:HIV Infections / Q000635:transmission*; D015438:Health Behavior; D006801:Humans; D008297:Male; D012307:Risk Factors; D012725:Sexual Behavior; D015819:Substance Abuse, Intravenous / Q000628:therapy*; D014481:United States