1. Department of Neurology, Medical School, Isfahan University of Medical Sciences, Isfahan 81744-176, Iran
2. Medical School, Isfahan University of Medical Sciences, Isfahan 81744-176, Iran
3. Medical Students’ Research Center, Isfahan University of Medical Sciences, Isfahan 81744-176, Iran
4. Department of Otolaryngology, Medical School, Isfahan University of Medical Sciences, Isfahan 81744-176, Iran
5. Department of Psychiatry, Medical School, Isfahan University of Medical Sciences, Isfahan 81744-176, Iran