1. Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, Japan
2. Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo, Japan
3. Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, Japan