1. Hidaka Training and Research Center, Japan Racing Association
2. Hidaka Training and Research Center, Japan Racing Association, 535–13 Nishicha, Urakawa, Hokkaido 057–0171, Japan
3. Department of Clinical Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan
4. Department of Molecular Genetics, Laboratory of Racing Chemistry
5. Department of Molecular Genetics, Laboratory of Racing Chemistry, 1731–2 Tsurutamachi, Utsunomiya, Tochigi 320–0851, Japan
6. Hidaka Horse Breeders Assosiation
7. Hidaka Horse Breeders Association, 14 Nobuka, Urakawa, Hokkaido 059–3454, Japan
8. Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology
9. Department of Basic Science, United Graduate School of Veterinary Sciences, Gifu University
10. Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183–8509, Japan
11. Department of Basic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan