Association between sepsis at ICU admission and mortality in patients with ICU-acquired pneumonia: An infectious second-hit modelEsperatti M, Fuentes N, Ferrer M, Ranzani OT, Li Bassi G, Singer M, Gonzalez ME, Peraita G, Urbano MS, Torres AOct 1, 2020Ranzani OTGroup LeaderI am an epidemiologist.