Affiliation: | 1. Department of Otolaryngology-Head and Neck surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan;2. Department of Physical Medicine and Rehabilitation, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan;3. Department of Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan |