1. Department of Otolaryngology Head and Neck Surgery, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi 622, Taiwan
2. School of Medicine, Tzu Chi University, Hualien 970, Taiwan
3. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
4. Department of Radiation Oncology, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi 622, Taiwan
5. Division of Nephrology, Department of Internal Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi 622, Taiwan