1. Department of Dentistry Chung Shan Medical University Hospital Taichung Taiwan
2. School of Dentistry Chung Shan Medical University Taichung Taiwan
3. Department of Veterinary Medicine National Chung Hsing University Taichung Taiwan
4. Department of Pharmacology, School of Medicine Chung Shan Medical University Taichung Taiwan
5. Department of Pharmacy Chung Shan Medical University Hospital Taichung Taiwan