Severe community-acquired pneumonia: Characteristics and prognostic factors in ventilated and non-ventilated patientsFerrer M, Travierso C, Cilloniz C, Gabarrus A, Ranzani OT, Polverino E, Liapikou A, Blasi F, Torres AJan 1, 2018Ranzani OTGroup LeaderI am an epidemiologist.