Acquired immunodeficiency syndrome (AIDS)--data as at 1 May 1991.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D000328:Adult; D005260:Female; D014943:Global Health; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D014505:Urban Population