1. Department of Internal Medicine, International Medical Center of Japan, Japan
2. Department of Nephrology, Showa University School of Medicine, Japan
3. Department of Dietetics, Otsuma Women's University, Japan
4. Kidney Center, Toranomon Hospital, Japan
5. First Department of Internal Medicine, Kyorin University School of Medicine, Japan
6. Traditional Chinese Medicine Research Labs., Kanebo Ltd., Japan
7. Department of Internal Medicine, Tokyo Medical and Dental University, Japan