[1] LF UK, Klin Otorinolaryngol & Chirurg Hlavy & Krku 1, Ovalu 84-1, Prague 15006, Czech Republic
[2] FN Motol, Ovalu 84-1, Prague 15006, Czech Republic
[3] LF UK, Neurol Klin 2, Prague, Czech Republic
[4] 1 LF UK Praze, Ustav Biofyz Informat, Prague, Czech Republic
[5] Fak Thomayerova Nemocnice Praze, Oddeleni Otorinolaryngol, Prague, Czech Republic