1. Department of Cardiorenal and Cerebrovascular Medicine, Faculty of Medicine, Kagawa University, Miki, Japan
2. Department of Nephrology, Sakaide City Hospital, Kagawa, Japan
3. These authors contributed equally.
4. Department of Cardiology, Mizushima Central Hospital, Kurashiki, Okayama, Japan
5. Department of Nephrology, Kaifu Hospital, Takamatsu, Kagawa, Japan
6. International Institute of Rare Sugar Research and Education & Faculty of Agriculture, Kagawa University, Miki, Japan