[1] Reg Hosp Liberec, Dept Neurosurg, Husova 10, Liberec 46063, Czech Republic
[2] Charles Univ Prague, Dept Neurosurg & Neurooncol, Fac Med 1, Prague, Czech Republic
[3] Mil Univ Hosp, Prague, Czech Republic
[4] Charles Univ Prague, Inst Sci Informat, Fac Med 1, Prague, Czech Republic
[5] Charles Univ Prague, Gen Univ Hosp Prague, Prague, Czech Republic