From the Centers for Disease Control and Prevention. Impact of the expanded AIDS surveillance case definition on AIDS case reporting--United States, first quarter, 1993.
D017088:AIDS-Related Opportunistic Infections / Q000453:epidemiology; D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D000293:Adolescent; D000328:Adult; D006801:Humans; D011159:Population Surveillance; D011647:Puerto Rico / Q000453:epidemiology; D014481:United States / Q000453:epidemiology