[1] Osp S Maurizio, Div Hematol, BMT, Bolzano, Italy
[2] Inst Nazl Tumori, Milan, Italy
[3] Univ Turin, I-10124 Turin, Italy
[4] Osped Riuniti Bergamo, Bergamo, Italy
[5] Osp Cuneo, Cuneo, Italy
[6] Ist Sci Biomed S Raffaele, Milan, Italy
[7] Osp Camillo, Rome, Italy
[8] Osp Palermo, Palermo, Italy
[9] Univ Verona, I-37100 Verona, Italy