1. Oncology Unit, San Gerardo Hospital, ASST-Monza, Monza, Italy
2. Hematology Division and Bone Marrow Unit, Ospedale San Gerardo, ASST-Monza, Monza, Italy
3. Division of Hematology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
4. Hematology Division, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
5. Hematology and Bone Marrow Transplant Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
6. Hematology Unit, Ospedale di Circolo, Varese, Italy
7. Division of Hematology, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
8. Hematology and Transfusional Medicine Unit, ASST Fatebenefratelli Sacco, Milan, Italy
9. Department of Hematology, ASST Spedali Civili di Brescia, Brescia, Italy
10. Hematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, IRCCS Milano, Italy
11. Oncology Department, ASST Lecco, Lecco, Italy
12. Chair of Hematology, Unit of Blood Diseases and Stem Cell Transplantation, University of Brescia, ASST Spedali Civili di Brescia, Brescia, Italy
13. Department of Hematology, Cancer Center, IRCCS Humanitas Research Hospital/Humanitas University, Rozzano, Italy
14. Department of Medicine and Surgery, University of Milano-Bicocca, Italy
15. Center of Biostatistics for Clinical Epidemiology, Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy