1. Kumamoto Prefectural Aso Public Health Center
2. Aso Kumabokujyo Co., Ltd
3. Fuculty of Veterinary Science, Nippon Veterinary and Life Science University
4. Department of Parasitology, Graduate School of Medical Sciences, Kanazawa University
5. Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University
6. Graduate School of Veterinary Sciences, Osaka Metropolitan University