1. Special Education Department, Faculty of Educational Sciences, Ankara University, Ankara, Turkey
2. Special Education Department & ICEM, Anadolu University, Eskişehir, Turkey
3. Hearing, Balance and Speech Unit, Department of Otorhinolaryngology-Head and Neck Surgery, Dokuz Eylül University, İzmir, Turkey
4. Madalyon Psychiatry Center, Ankara, Turkey
5. Faculty of Health Sciences, Hacettepe University, Ankara, Turkey