Crude Mortality Associated With the Empirical Use of Polymyxins in Septic Patients in a Setting of High Prevalence of Carbapenem-Resistant Gram-negative Bacteria: Retrospective Analysis of a Cohort - Bezerra, Camila Loredana Pereira Alves Madeira; Santos Junior, Eusebio Lino; Oliveira, Maura Salaroli de; Dias, Maria Beatriz Gandra de Souza; Levin, Anna Sara Shafferman; Freire, Maristela Pinheiro; Boszczowski, Ícaro; Salomao, Matias Chiarastelli (Clinical infectious diseases, 2023)