[1] Jagiellonian Univ, Coll Med, Chair Clin Immunol & Transplantat, Dept Clin Immunol,Polish Amer Inst Pediat, Krakow, Poland
[2] Univ Childrens Hosp, Dept Transplantat, Krakow, Poland
[3] Med Univ, Chair & Clin Bone Marrow Transplantat Pediat Onco, Wroclaw, Poland
[4] Med Univ, Chair & Clin Pediat Oncol Hematol & Transplantat, Poznan, Poland
[5] Nicolaus Copernicus Univ, Coll Med, Chair Pediat Hematol & Oncol, Bydgoszcz, Poland
[6] Med Univ Lublin, Dept Pediat Hematol Oncol & Transplantol, Lublin, Poland