1. Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14–1 Sunayama, Kamisu-shi, Ibaraki 314–0255, Japan
2. Kitamori Pet Clinic, 2368 Kobayashi, Mobara-shi, Chiba 297–0074, Japan
3. Donnalou Boxers, 453–40 Washizu, Sugito-machi, Kitakatsushika-gun, Saitama 345–0002, Japan
4. Tokyo Veterinary Cardiology Center, 8–19–12 Fukasawa, Setagaya-ku, Tokyo 158–0081, Japan
5. Camic Co. Ltd., 17–8–3 Midori, Sumida-ku, Tokyo 130–0021, Japan