title: A need not to know.
authors.forename: J A
authors.initials: JA
authors.lastname: Segal
mesh_terms: D015492:AIDS Serodiagnosis / Q000592:standards; D000163:Acquired Immunodeficiency Syndrome / Q000175:diagnosis*; D003955:Diagnostic Tests, Routine / Q000592:standards*; D006801:Humans; D010559:Personnel Management / Q000331:legislation & jurisprudence*; D019966:Substance-Related Disorders / Q000175:diagnosis*; D014481:United States