[1] Hacettepe Univ Hosp, Dept Neurol, Neuroimmunol Unit, TR-06100 Ankara, Turkey
[2] Hacettepe Univ Hosp, Inst Neurol Sci & Psychiat, Neuroophthalmol Unit, TR-06100 Ankara, Turkey
[3] Hacettepe Univ Hosp, Dept Neurol, Clin Electrophysiol Unit, TR-06100 Ankara, Turkey
[4] Hacettepe Univ Hosp, Dept Internal Med, Gastrointestinal Unit, TR-06100 Ankara, Turkey
[5] Hacettepe Univ Hosp, Dept Radiol, TR-06100 Ankara, Turkey