[1] Univ Bologna, Inst Hematol & Med Oncol Seragnoli, Bologna, Italy
[2] Univ Siena, Div Hematol, I-53100 Siena, Italy
[3] Univ Roma La Sapienza, Chair Hematol, Rome, Italy
[4] Maggiore Hosp, Div Pulm Med, Bologna, Italy
[5] Univ Udine, Chair Hematol, I-33100 Udine, Italy
[6] Catanzaro Hosp, Div Hematol, Catanzaro, Italy
[7] Ravenna Hosp, Div Hematol, Ravenna, Italy
[8] Univ Roma Tor Vergata, Chair Hematol, Rome, Italy
[9] Forli Hosp, Div Oncol, Forli, Italy
[10] Cesena Hosp, Hematol Unit, Cesena, Italy