1. Department of Pathobiology, Nihon University School of Veterinary Medicine
2. Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Toky
3. Department of Veterinary Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California at Davis
4. Laboratory of Comprehensive Veterinary Clinical Studies, Nihon University School of Veterinary Medicine