1. Department of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan, Taiwan
3. Department of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan
4. Department of Otolaryngology—Head and Neck Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan