title: Surrogate end points in clinical trials.
authors.forename: S S
authors.initials: SS
authors.lastname: Ellenberg
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy* / Q000401:mortality; D015415:Biomarkers / Q000097:blood*; D015704:CD4 Antigens / Q000032:analysis; D015496:CD4-Positive T-Lymphocytes; D006801:Humans; D007958:Leukocyte Count; D011379:Prognosis; D015215:Zidovudine / Q000627:therapeutic use
chemical_list: D015415:Biomarkers; D015704:CD4 Antigens; D015215:Zidovudine