Wen-Jiun Lin1, Chen-Chi Wang1,2,3,4, Sheng-Hwa Chen3, Jia-Shiou Liao2. 1. Department of Otolaryngology-Head & Neck Surgery, Taichung Veterans General Hospital, Taichung, Taiwan. 2. School of Medicine, National Yang-Ming University, Taipei, Taiwan. 3. School of Speech Language Pathology & Audiology, Chung Shan Medical University, Taichung, Taiwan. 4. Department of Audiology and Speech-Language Pathology, Asia University, Taichung, Taiwan.