Factors associated with admission to the intensive care unit and mortality in patients with COVID-19, Colombia. - Machado-Alba JE; Valladales-Restrepo LF; Machado-Duque ME; Gaviria-Mendoza A; Sánchez-Ramírez N; Usma-Valencia AF; Rodríguez-Martínez E; Rengifo-Franco E; Forero-Supelano VH; Gómez-Ramirez DM; Sabogal-Ortiz A (PloS one, 2021)