| neutropenia is a risk factor for gram-negative bacillus bacteremia in human immunodeficiency virus-infected patients: results of a nested case-control study. | a previous cohort study demonstrated a relation between neutropenia and bacteremia due to gram-negative bacilli among patients infected with human immunodeficiency virus (hiv). to explore further the relation between neutropenia and bacteremia due to escherichia coli, klebsiella pneumoniae, or pseudomonas aeruginosa among hiv-infected patients, controlling for confounding factors, the authors conducted a nested case-control study with matching and risk-set sampling of controls. the cohort includ ... | 1998 | 9867263 |