1. Department of Otolaryngology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, Republic of China;
2. National Defense Medical Center, Taipei, Taiwan, Republic of China;
3. Institute of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China;
4. Division of Rheumatology, Department of Internal Medicine, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China
5. School of Medicine, Tzu Chi University, Hualian, Taiwan, Republic of China;
6. Department of Life Science and Institute of Molecular Biology, National Chung Cheung University, Chiayi, Taiwan, Republic of China
7. Department of Surgery, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China
8. Department of Medical Research, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China
9. Division of Hematology-Oncology, Department of Internal Medicine, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China
10. Cancer Center, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China;
11. Department of Otolaryngology, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China
12. Center for Clinical Epidemiology and Biostatistics, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan, Republic of China;