AIDS: the challenges ahead.
D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D000573:American Hospital Association; D003428:Cross Infection / Q000517:prevention & control*; D006801:Humans; D010564:Personnel, Hospital / Q000592:standards*; D012449:Safety; D014481:United States; D014489:United States Occupational Safety and Health Administration