1. Department of Life Science, National Taitung University, Taitung, Taiwan, Republic of China
2. Graduate Institute of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, Republic of China
3. R&D Division, Sunway Biotechnology Company Limited, Taipei, Taiwan, Republic of China
4. Department of Nutrition and Health Science, Fooyin University, Kaohsiung, Taiwan, Republic of China
5. Institute of Microbiology and Biochemistry, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 106, Republic of China