[1] Univ Hosp Vall Hebron, Dept Hematol, Barcelona, Spain
[2] Sapienza Univ, Dept Cellular Biotechnol & Hematol, Policlin Umberto 1, Rome, Italy
[3] Univ Milan, Milan, Italy
[4] Oncol Practice, Lubeck, Germany
[5] AP HP Hop Pitie Salpetriere, Dept Clin Hematol, Paris, France
[6] N N Blokhin Russian Canc Res Ctr, Moscow, Russia
[7] F Hoffmann Roche Ltd, Basel, Switzerland
[8] Ulm Univ Med Ctr, Dept Internal Med 3, Ulm, Germany