1. Department of Neurology Istanbul Istanbul University‐Cerrahpasa, Cerrahpasa School of Medicine Istanbul Turkey
2. Department of Audiology Istanbul Istanbul University‐Cerrahpasa, Cerrahpasa School of Medicine Istanbul Turkey
3. Department of Otorhinolaryngology Istanbul Istanbul University‐Cerrahpasa, Cerrahpasa School of Medicine Istanbul Turkey
4. Department of Public Health Istanbul Istanbul University‐Istanbul School of Medicine Istanbul Turkey