1. Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Sciences, Kitasato University
2. Ishikari Agricultural Mutual Relief Association
3. Ikari Kogen Farm
4. Iburi Agricultural Mutual Relief Association
5. School of Veterinary Medicine, Hokkaido University
6. Saikin Kagaku Institute Co., Ltd.,
7. Veterinary Teaching Hospital, School of Veterinary Medicine, Rakuno Gakuen University