1. Department of Functional Pathology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane 693-8501, Japan
2. Division of Nephrology, Shimane University Hospital, 89-1 Enya-cho, Izumo, Shimane 693-8501, Japan
3. Department of Cardiology, Shanghai Gongli Hospital, Second Military Medical University, 207 Juye Road, Pudong, Shanghai 200135, P.R. China