1. Laboratory of Veterinary Radiology Nippon Veterinary and Life Science University Tokyo Japan
2. The Research Center for Animal Life Science Nippon Veterinary and Life Science University Tokyo Japan
3. Neurology and Neurosurgery Service Veterinary Specialists & Emergency Center Saitama Japan
4. Laboratory of Small Animal Surgery (Neurology), School of Veterinary Medicine Azabu University Kanagawa Japan