1. Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University
2. Ishikari-Nanbu NOSAI, Hokkaido Mutual Relief Association
3. Department of Veterinary Internal Medicine, School of Veterinary Medicine, Rakuno Gakuen University
4. Department of Veterinary Surgery II, School of Veterinary Medicine, Rakuno Gakuen University
5. Testing Laboratory II, Livestock Improvement Association of Japan
6. Graduate School of Agricultural and Life Sciences, The University of Tokyo