1. Department of Speech Therapy, School of Rehabilitation, Babol University of Medical Sciences, Babol, Iran
2. ENT and Head & Neck Research Center and Department, The Five Senses Health Institute, Iran University of Medical Sciences, Tehran, Iran
3. Department of Otolaryngology, Medical University of Hannover (Mhh), Hannover, Germany
4. Department of Basic Sciences in Rehabilitation, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran