[1] Mayo Clin, Scottsdale, AZ USA
[2] Mayo Clin, Div Hematol, Rochester, MN USA
[3] Alexandra Hosp, Athens, Greece
[4] Queen Joanna Univ Hosp, Sofia, Bulgaria
[5] Hematol Clin Univ Multiprofile Hosp Act Treatment, Plovdiv, Bulgaria
[6] Mor Kaposi Teaching Hosp, Dept Hematol, Kaposvar, Hungary
[7] First Republican Clin Hosp Udmurtia, Dept Hematol, Izhe Versusk, Russia
[8] Univ Chicago Med Ctr, Chicago, IL USA
[9] Univ Navarra Clin, Pamplona, Spain
[10] Onyx Pharmaceut Inc, San Francisco, CA USA
[11] Univ Nantes, Nantes, France
[12] Univ Turin, I-10124 Turin, Italy