1. Department of Endocrinology, Metabolism, and Nephrology, Kochi Medical School, Kochi University, Japan
2. Department of Surgery, Kochi Medical School, Kochi University, Japan
3. Department of Pediatrics, Kochi Medical School, Kochi University, Japan
4. Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Japan