[1] Univ Novi Sad, Clin Hematol, Clin Ctr Vojvodina, Fac Med, Novi Sad 21000, Serbia
[2] Univ Belgrade, Dept Hematol, KBC Bezanijska Kosa, Fac Med, Belgrade, Serbia
[3] Clin Ctr Vojvodina, Clin Hematol, Novi Sad, Serbia
[4] KBC Bezanijska Kosa, Dept Hematol, Belgrade, Serbia