Update: acquired immunodeficiency syndrome--United States.
D000163:Acquired Immunodeficiency Syndrome / Q000150:complications / Q000453:epidemiology* / Q000209:etiology; D000328:Adult; D002648:Child; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D013997:Time Factors; D014481:United States