1. Joint Graduate School of Veterinary Sciences, Tottori University, Tottori, Tottori, Japan
2. Division of Anatomy Histology and Embryology, School of Veterinary Medicine and Biomedical Sciences, IPB University, Bogor, West Java, Indonesia
3. Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo, Japan
4. Graduate School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, Japan
5. Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Fukuoka, Fukuoka, Japan
6. Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Tottori, Japan