[1] Charles Univ Prague, Teaching Hosp Motol, Sch Med 2, Dept Pediat Surg,Inst Postgrad Med, Prague 15006 5, Czech Republic
[2] Charles Univ Prague, Teaching Hosp Motol, Fac Med 2, Dept Pathol & Mol Med,Inst Postgrad Med, Prague 15006 5, Czech Republic
[3] Charles Univ Prague, Teaching Hosp Motol, Fac Med 2, Dept Imaging Methods,Inst Postgrad Med, Prague 15006 5, Czech Republic