aPostoperative and Abdominal Organ Transplant Intensive Care Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna

bDepartment of Medical and Surgical Sciences (DIMEC), Alma Mater University, University of Bologna

cIRCCS Azienda Ospedaliero-Universitaria of Bologna

dInternal Medicine Unit for the Treatment of Severe Organ Failure, IRCCS Azienda Ospedaliero-Universitaria di Bologna

eDepartment of Medical and Surgical Sciences (DIMEC) and Center for Research Applied Biomedical Research (CRBA), University of Bologna

fHepatobiliary and Transplant Surgery Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna

gDepartment of Clinical, Integrated and Experimental Medicine (DIMES), Statistical service, University of Bologna, Bologna, Italy

Received 15 March 2022 Accepted 24 May 2022

Correspondence to Guizzardi Chiara, MD, Department of Medical and Surgical Sciences (DIMEC), University of Bologna - IRCCS Azienda Ospedaliero-universitaria di Bologna. Street Giuseppe Massarenti, 9, Bologna 40138, Italy., Tel: +39 51 2143101; fax: +39 51 2143105; e-mail: [email protected]