1. Biotechnology Division, Taiwan Agricultural Research Institute, Council of Agriculture, Taichung County 413, Taiwan
2. Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Taichung 402, Taiwan
3. Department of Biochemistry, School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
4. Clinical Laboratory, Chung Shan Medical University Hospital, Taichung 402, Taiwan
5. Department of Microbiology and Immunology, School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
6. Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan
7. School of Nutrition, Chung Shan Medical University, Taichung 402, Taiwan