1. Laboratory of Theriogenology, Department of Veterinary Medicine, Faculty of Agriculture, Iwate University
2. Department of Theriogenology, Faculty of Veterinary Medicine, Assiut University
3. Department of Clinical Veterinary Science, The United Graduate School of Veterinary Sciences, Gifu University
4. Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agricultural Technology