[1] Univ Tubingen Hosp, Tubingen, Germany
[2] Univ Athens, Sch Med, GR-11527 Athens, Greece
[3] Univ Bologna, Sch Med, Bologna, Italy
[4] Hosp Univ Salamanca IBSAL, Salamanca, Spain
[5] Univ Turin, Myeloma Unit, Div Hematol, Turin, Italy
[6] Fdn IRCCS Ist Nazl Tumori, Milan, Italy
[7] Univ Hosp Leuven, Leuven, Belgium
[8] Hosp Badalona Germans Trias & Pujol, Barcelona, Spain
[9] Univ Clin Heidelberg, Heidelberg, Germany
[10] Univ Catania, Sch Med, Catania, Italy
[11] Univ Bari, Sch Med, Bari, Italy
[12] Lund Univ, Skane Univ Hosp, Lund, Sweden
[13] Celgene Corp, Boudry, Switzerland
[14] Celgene Corp, Summit, NJ USA
[15] Univ Hosp Nantes, Nantes, France