[1] Inst Hematol & Blood Transfus, CR-12820 Prague, Czech Republic
[2] Charles Univ Prague, Fac Med 2, CLIP, Dept Paediat Haematol & Oncol, Prague, Czech Republic
[3] Univ Bologna, Inst Hematol LeA Seragnoli, Bologna, Italy
[4] Charles Univ Prague, Fac Med 1, Inst Clin & Expt Hematol, Prague, Czech Republic
[5] Charles Univ Prague, Inst Hematol & Blood Transfus, Prague, Czech Republic