title: Reply to 'Possible bias of ascertainment in assessing chemoprophylaxis for cryptosporidiosis' by Holmberg and Moorman.
authors.forename: C J
authors.initials: CJ
authors.lastname: Fichtenbaum
authors.forename: R
authors.initials: R
authors.lastname: Zackin
authors.forename: J
authors.initials: J
authors.lastname: Feinberg
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000517:prevention & control*; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D019072:Antibiotic Prophylaxis; D015982:Bias; D018791:CD4 Lymphocyte Count; D017291:Clarithromycin / Q000627:therapeutic use*; D003457:Cryptosporidiosis / Q000517:prevention & control*; D006801:Humans; D017828:Rifabutin / Q000627:therapeutic use*
chemical_list: D000900:Anti-Bacterial Agents; D017828:Rifabutin; D017291:Clarithromycin