1. Department of Clinical Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University
2. Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki
3. Takuma Veterinary Services
4. Division of the Project for Zoonosis Education and Research, University of Miyazaki
5. Laboratory of Theriogenology, Obihiro University of Agriculture and Veterinary Medicine