1. Department of Parasitology, Nippon Veterinary and Animal Science University
2. Animal Health Division, Pfizer Pharmaceuticals Inc.
3. Department of Veterinary Parasitology, Faculty of Veterinary Medicine, Rakuno Gakuen University
4. Department of Veterinary Medicine, Faculty of Agriculture, Tottori University
5. Yamagata Chuo Livestock Hygiene Center
6. Morioka Livestock Hygiene Center