1. Department of Cardiovascular Medicine, Kitajima Taoka Hospital, Tokushima, Japan
2. Department of Cardiovascular Medicine, Tokushima University Hospital, Tokushima, Japan
3. Department of Haematology, Endocrinology and Metabolism, Tokushima University Graduate School of Biomedical Science, Tokushima, Japan
4. epartment of Community Medicine for Diabetes and Metabolic Disorders, Tokushima University Graduate School of Biomedical Science, Tokushima, Japan
5. Department of Medical Education, Tokushima University, Tokushima, Japan