1. Veterinary Medical Centre, College of Life, Environmental and Advanced Sciences Osaka Prefecture University Izumisano Osaka Japan
2. Laboratory of Veterinary Internal Medicine, Department of Small Animal Clinical Sciences School of Veterinary Medicine Rakuno Gakuen University Ebetsu Hokkaido Japan
3. Laboratory of Veterinary Radiology, Graduate School of Life and Environmental Sciences Osaka Prefecture University Izumisano Osaka Japan