National information network launched.
B
B
Japsen
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D016208:Databases, Factual; D015658:HIV Infections / Q000453:epidemiology*; D006801:Humans; D011159:Population Surveillance; D012042:Registries; D014481:United States / Q000453:epidemiology