Affiliation: | 1. Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan;2. School of Medicine, Chung Shan Medical University, Taichung, Taiwan;3. Department of Radiation Oncology, Chung Shan Medical University Hospital, Taichung, Taiwan;4. Department of Anesthesiology, Chung Shan Medical University Hospital, Taichung, Taiwan |