1. Department of Otolaryngology–Head and Neck Surgery, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
2. Health Information and Epidemiology Laboratory of Chang Gung Memorial Hospital, Chiayi, Taiwan
3. Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan
4. Department of Traditional Chinese Medicine, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
5. School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
6. Department of Otolaryngology–Head and Neck Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
7. Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
8. Division of Pulmonary and Critical Care Medicine, Department of Respiratory Care, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
9. Department of Respiratory Therapy, College of Medicine, Chang Gung University, Taoyuan, Taiwan
10. Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan