[1] Univ Hosp Crete, Hematol Dept, Iraklion, Greece
[2] Univ Athens, Athens Med Ctr, Hematol Dept, Athens, Greece
[3] Univ Athens, Hematol Dept, Athens, Greece
[4] Univ Athens, 401 Mil Hosp, Hematol Dept, Athens, Greece
[5] Univ Athens, Pathol Dept, Athens, Greece
[6] Laikon Gen Hosp, Immunol Dept, Athens, Greece
[7] Laikon Gen Hosp, Hematol Dept, Athens, Greece
[8] Evangelismos Gen Hosp, Pathol Dept, Athens, Greece