[1] Univ Foggia, Inst Haematol, Dept Med & Occupat Sci, Foggia, Italy
[2] Univ Urbino, ISTI, I-61029 Urbino, Italy
[3] Univ Bari, Inst Haematol, Bari, Italy
[4] Univ Bologna, Policlin S Orsola, Inst Haematol, Haematopathol Unit, Bologna, Italy
[5] Univ Perugia, Inst Haematol, I-06100 Perugia, Italy