1 Hospital Universitario de Salamanca, Spain; University of Salamanca. mvmateos@usal.es.
2 University Hospital Hamburg-Eppendorf, Hamburgo.
3 National and Kapodistrian University of Athens, Medicine School, Athens, Greece.
4 Evangelismos General Hospital, Athens, Greece.
5 University of Bologna.
6 University Hospital Leuven, Leuven.
7 Hospital Universitario Marques de Valdecilla (IDIVAL), Santander, Spain; University of Cantabria, Santander, Spain.
8 Theageneion Cancer Hospital, Thessaloniki, Greece.
9 University of Torino, Italy; AOU Citta della Salute e della Scienza of Turin.
10 Hopital La Mileterie.
11 Clinica Universidad de Navarra, Pamplona. Spain; Centro de Investigacion Medica Aplicada (CIMA), Pamplona. Spain; Instituto de Investigacion Sanitaria de Navarra IDISNA, Pamplona. Spain; Centro de Investigacion Biomedica en Red en Cancer (CIBERONC) Pamplona, Spain.
12 Oslo Myeloma Center, Oslo, Norway; Oslo University Hospital, Oslo, Norway; KG Jebsen Center for B Cell Malignancies, University of Oslo, Oslo, Norway.
13 IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia "Seragnoli", Bologna, Italy; Universita di Bologna, Bologna.