1. Kanazawa Zoological Gardens, Yokohama Greenery Foundation, 5-15-1, Kamariya higashi, Kanazawa-ku, Yokohama, Kanagawa 236-0014, Japan
2. Veterinary Surgery, Joint Department of Veterinary Medicine, Tottori University, 4-101, Koyama Minami, Tottori 680-8550, Japan
3. Department of Veterinary Histopathology, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24, Korimoto, Kagoshima 890-0065, Japan
4. Kono Seisakusho Co., Ltd., 2-11-10, Soya, Ichikawa, Chiba 272-0832, Japan
5. Gunma Safari Park, 1 Okamoto, Tomioka, Gunma 370-2321, Japan