[1] Univ Bologna, Seragnoli Inst Hematol, Sch Med, Bologna, Italy
[2] Univ Torino, Div Hematol, Myeloma Unit, Azienda Osped Citta Salute & Sci Torino, Turin, Italy
[3] Vrije Univ Amsterdam Med Ctr, Dept Hematol, Amsterdam, Netherlands
[4] Univ Athens, Sch Med, Athens, Greece
[5] Masaryk Univ Hosp, Brno, Czech Republic
[6] Ankara Univ, Tip Fak, Ankara, Turkey
[7] Erasmus MC, Dept Hematol, Rotterdam, Netherlands
[8] Aalborg Univ Hosp, Dept Hematol, Clin Canc Res Ctr, Aalborg, Denmark
[9] South Elvsborg Hosp, Boras, Sweden
[10] Sapienza Univ Rome, Dept Hematol, Rome, Italy
[11] Kantonsspital St Gallen, St Gallen, Switzerland
[12] Univ Catania, Div Hematol, Osped Ferrarotto, Catania, Italy
[13] Erasmus MC Canc Inst, Clin Trial Ctr, HOVON Data Ctr, Rotterdam, Netherlands
[14] ZNA Stuivenberg, Dept Hematol, Antwerp, Belgium
[15] Wilhelminen Canc Res Inst, Dept Med, Ctr Oncol Hematol & Palliat Care, Wilhelminenspital, Vienna, Austria
[16] Erasmus MC, Rotterdam, Netherlands