[1] Erasmus MC, Canc Inst, Rotterdam, Netherlands
[2] Vrije Univ Amsterdam, Amsterdam UMC, Amsterdam, Netherlands
[3] HOVON Data Ctr, Rotterdam, Netherlands
[4] Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
[5] Univ Med Ctr Groningen, Groningen, Netherlands
[6] Isala Clin, Zwolle, Netherlands
[7] St Antonius Hosp, Nieuwegein, Netherlands
[8] Univ Med Ctr Utrecht, Utrecht, Netherlands
[9] European Myeloma Network, Rotterdam, Netherlands
[10] Univ Turin, Azienda Osped Univ Citta Salute & Sci Torino, Turin, Italy