1 Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
2 Università degli Studi di Milano, Milan, Italy.
3 Department of General Medicine, U.O.C. General Medicine-Immunology and Allergology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
4 Endocrinology and Diabetology Units, Department of Medical Sciences and Community, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
5 Dermatology Unit, Department of Physiopathology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
6 Division of Pathology, Department of Pathophysiology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
7 Biostatistic Unit, IRCCS Regina Elena, Roma, Italy.