[1] Charles Univ Prague, Fac Med 2, Dept Paediat Haematol & Oncol, Prague, Czech Republic
[2] Univ Hosp Motol, Prague, Czech Republic
[3] Charles Univ Prague, Fac Med 2, Dept Paediat Surg, Prague, Czech Republic
[4] Charles Univ Prague, Dept Anaesthesiol, Prague, Czech Republic
[5] Charles Univ Prague, ICM, Fac Med 2, Prague, Czech Republic
[6] Charles Univ Prague, Dept Pathol & Mol Med, Fac Med 2, Prague, Czech Republic
[7] Charles Univ Prague, Dept Radiol, Fac Med 2, Prague, Czech Republic