1. Oncology Institute of Southern Switzerland, Bellinzona, Switzerland;
2. Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy;
3. Institute of Hematology and Medical Oncology, Policlinico S. Orsola-Malpighi, Bologna, Italy;
4. Department of Oncology, Unit of Lymphoid Malignancies, San Raffaele Scientific Institute, Milan, Italy;
5. Hematology, Azienda Ospedaliera Città della Salute e della Scienza, Turin, Italy;
6. Hematology, Azienda Ospedaliera Bianchi-Melacrino-Morelli, Reggio Calabria, Italy;
7. Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy;
8. Hematology, Ospedale Businco, Cagliari, Italy;
9. Hematology, Policlinico Careggi, Florence, Italy;
10. Department of Hematology, Niguarda Ca' Granda Hospital, Milan, Italy;
11. Hematology Unit, Department of Oncology, Azienda Ospedaliera ASMN IRCCS Reggio Emilia, Italy;
12. Medical Oncology Unit, Ospedale di Circolo Fondazione Macchi, Varese, Italy;
13. Department of Hematology, Azienda Ospedaliera Papardo, Messina, Italy;
14. Onco-Hematology Department, Modena University, Modena, Italy; and
15. Cancer Research UK Centre, University of Southampton, Southampton, United Kingdom