Epidemiologic and clinical aspects of the acquired immune deficiency syndrome.
D000163:Acquired Immunodeficiency Syndrome / Q000175:diagnosis / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D006205:Haiti / Q000208:ethnology; D006716:Homosexuality; D006801:Humans; D008297:Male; D012306:Risk; D019966:Substance-Related Disorders; D065227:Transfusion Reaction; D014481:United States