1. Department of Otolaryngology, Chiayi Chang Gung Memorial Hospital, Puzi, Taiwan
2. Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
3. Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
4. Head and Neck Infectious Treatment Center, Chiayi Chang Gung Memorial Hospital, Puzi, Taiwan