title: A small step forward.
authors.forename: L
authors.initials: L
authors.lastname: Swaffield
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000097:blood* / Q000453:epidemiology / Q000209:etiology; D015496:CD4-Positive T-Lymphocytes / Q000737:chemistry*; D006679:HIV Seropositivity / Q000150:complications*; D006801:Humans; D007958:Leukocyte Count; D011237:Predictive Value of Tests