1. Department of Cardiovascular Medicine, Tokushima University Hospital, Tokushima, Japan
2. Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
3. Center for Cerebral and Cardiovascular Disease Information, National Cerebral and Cardiovascular Center, Osaka, Japan
4. Department of Community Medicine for Cardiology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan