1. Hematology DivisionFoundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan Milan Italy
2. Department of Clinical Sciences and Community HealthUniversity of Milan, and Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
3. Epidemiology UnitFoundation IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy