affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), St. James’s Hospital

Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES, Tarragona Health Data Research working group (THeDaR)- ICU Hospital Universitario Joan XXIII, Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), St. James’s Hospital, ICU Hospital Universitario Dr. Negrín, Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES, Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES, Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES, Vall d´Hebrón University Hospital, Hospital Parc Taulí, ICU Hospital Marqués de Valdecilla, ICU Hospital Marqués de Valdecilla, ICU Hospital Marqués de Valdecilla, ICU Hospital Marqués de Valdecilla, ICU Hospital de La Princesa, - Critical Care Department, ICU Hospital Universitario de Burgos, ICU Hospital Universitario de Burgos, ICU Hospital Universitario Central de Asturias, Autonomous University of Barcelona - Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), Unidad de cuidados intensivos, Hospital Universitario Príncipe de Asturias, ICU Hospital Universitario Central de Asturias, Hospital Universitario Donostia, ICU Hospital Universitario y Politécnico La Fe, ICU Hospital Universitario y Politécnico La Fe, ICU Hospital Universitario y Politécnico La Fe, ICU Hospital Universitario y Politécnico La Fe, ICU Hospital Universitario y Politécnico La Fe, ICU Complejo Hospitalario Universitario a Coruña, ICU Hospital Universitario de Jerez, ICU Hospital Universitario de Jerez and Independent

Universidad de la Sabana, University of Oxford - Pandemic Sciences Institute, Universidad de la Sabana, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Rovira i Virgili University - Critical Care Department URV/IISPV/CIBERES and Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), St. James’s Hospital