1. Department of Veterinary Clinical Sciences; Veterinary Teaching Hospital; Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Hokkaido Japan
2. Laboratory of Veterinary Internal Medicine; Department of Veterinary Clinical Sciences; Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Hokkaido Japan
3. Department of Veterinary Clinical Studies; Faculty of Veterinary Medicine; Universiti Putra Malaysia; Serdang Selangor Malaysia