Erasmus University Rotterdam (EUR) - Department of Neuro-Oncology, Counties Manukau District Health Board - Middlemore Hospital, Erasmus University Rotterdam (EUR) - HOVON Data Center, Utrecht University, University Medical Center, Cancer Center, Department of Hematology, Utrecht University - Department of Neurology, Elisabeth-Tweesteden Hospital, Sir Charles Gairdner Hospital, Maastricht University, Medical Center, Department of Hematology, Radboud University Nijmegen - Department of Hematology, VU University Amsterdam - Department of Hematology, Netherlands Cancer Institute, University of Groningen - Department of Hematology and Oncology, University of Melbourne - Royal Melbourne Hospital, Spaarne Gasthuis, Erasmus University Rotterdam (EUR) - Department of Neuro-Oncology, University of Groningen, University of Melbourne - Royal Melbourne Hospital, VU University Amsterdam and Erasmus University Rotterdam (EUR) - Department of Hematology

University of Bologna - Seràgnoli Institute of Hematology, University of Turin, Ankara University, University of Bologna - Seràgnoli Institute of Hematology, Sapienza University of Rome, National and Kapodistrian University of Athens, University of Bologna - Seràgnoli Institute of Hematology, Erasmus University Rotterdam (EUR) - Clinical Trial Center, University of Turin, Erasmus University Rotterdam (EUR) - Erasmus Medical Center (MC), University of Bologna - Seràgnoli Institute of Hematology, University of Catania, Università degli Studi di Udine, Fondazione IRCCS Istituto Nazionale dei Tumori - Division of Hematology and Bone Marrow Transplantation, Papa Giovanni XXIII Hospital, Charles University in Prague, Azienda Unità Sanitaria Locale (AUSL) - IRCCS di Reggio Emilia, Lund University - Skane University Hospital, ASST-Spedali Civili of Brescia - Radiation Oncology Department, University Hospital Brno, Haga Hospital - Department of Hematology, Azienda Ospedaliera S.Croce-Carle, Radboud University Nijmegen - Department of Hematology, Ospedale Santa Maria della Misericordia, Ospedali Riuniti di Ancona, Grande Ospedale Metropolitano Bianchi-Melacrino-Morelli, University of Padua, Università degli Studi di Perugia, Aarhus University - Aarhus University Hospital, VU University Amsterdam - Department of Hematology, University of Turin, Ospedale dell'Angelo, Città Della Salute e della Scienza, Albert Schweitzer Hospital - Department of Internal Medicine, Maastricht University, Medical Center, Department of Hematology, Wilhelminen Cancer Research Institute, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS) - Ospedale Policlinico San Martino, Presidio Ospedaliero dello Spirito Santo, ZNA Stuivenberg, Amphia Hospital, University of Ostrava, Elisabeth-Tweesteden Hospital, Leiden University, Medical Center (LUMC), Department of Hematology, UOSD Ematologia ASL Roma, Cantonal Hospital of St. Gallen, Università degli Studi di Bari “Aldo Moro” (UNIBA), Norwegian University of Science and Technology (NTNU), University of Copenhagen - Rigshospitalet, South Elvsborg Hospital, Isala Kliniek, Utrecht University, University Medical Center, Cancer Center, Department of Hematology, Canisius-Wilhelmina Ziekenhuis, Grande Ospedale Metropolitano Niguarda, Ospedale San Francesco, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Monash University, University of Turin and Erasmus University Rotterdam (EUR) - Department of Hematology