Adapting to hope and uncertainty: two decades of Focus.
D000163:Acquired Immunodeficiency Syndrome / Q000266:history* / Q000517:prevention & control / Q000628:therapy; D015658:HIV Infections / Q000266:history / Q000517:prevention & control / Q000628:therapy; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D010506:Periodicals as Topic / Q000266:history*; D014481:United States