1. Research Center for Animal Medicine National Chung Hsing University Taichung Taiwan
2. Graduate Institute of Microbiology and Public Health College of Veterinary Medicine National Chung Hsing University Taichung Taiwan
3. Department of Veterinary Medicine College of Veterinary Medicine National Chung Hsing University Taichung Taiwan
4. Animal Health Research Institute Council of Agriculture Executive Yuan New Taipei City Taiwan
5. Graduate Institute of Veterinary Pathobiology College of Veterinary Medicine National Chung Hsing University Taichung Taiwan