[1] Erasmus MC, Rotterdam, Netherlands
[2] Oslo Univ Hosp, Oslo Myeloma Ctr, Oslo, Norway
[3] Univ Oslo, KG Jebsen Ctr B Cell Malignancies, Oslo, Norway
[4] Med Univ Lodz, Nicolaus Copernicus Prov Multispecialty Oncol & T, Lodz, Poland
[5] VD Seredavin Samara Reg Clin Hosp, Samara, Russia
[6] Univ Hosp Brno, Brno, Czech Republic
[7] Univ Hosp Olomouc, Olomouc, Czech Republic
[8] Evangelismos Gen Hosp Athens, Athens, Greece
[9] Independent Publ Teaching Hosp 1, Lublin, Poland
[10] VA Almazov North West Fed Med Res Ctr, St Petersburg, Russia
[11] Oncopeptides AB, Stockholm, Sweden
[12] Harvard Med Sch, Dana Farber Canc Inst, Boston, MA 02115 USA