1. School of MedicineChung Shan Medical University Taichung Taiwan
2. Department of OtolaryngologyChung Shan Medical University Hospital Taichung Taiwan
3. Graduate Institute of Oral Sciences, Chung Shan Medical University Taichung Taiwan
4. Department of DentistryChung Shan Medical University Hospital Taichung Taiwan
5. Institute of Medicine, Chung Shan Medical University Taichung Taiwan
6. Department of Living Services IndustryTainan University of Technology Tainan City Taiwan
7. Department of Medical ResearchChung Shan Medical University Hospital Taichung Taiwan
8. Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University Taichung Taiwan