1 Department of Pathophysiology and Transplantation, School of Medicine and Surgery, University of Milan, Milan, Italy; Infectious Diseases Unit, Departement of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
2 Infectious Diseases Unit, Departement of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
3 Department of Pathophysiology and Transplantation, School of Medicine and Surgery, University of Milan, Milan, Italy; Infectious Diseases Unit, Departement of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: andrea.gori@unimi.it.