1. Department of Nephrology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
2. Department of Internal Medicine, Sugita Genpaku Memorial Obama Municipal Hospital, Obama, Fukui, Japan
3. Department of Clinical Laboratory, University of Fukui Hospital, Fukui, Japan
4. Reagent R&D Department, Denka Seiken Co., Ltd, Gosen, Niigata, Japan
5. Department of Molecular Pathology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
6. Iwamuro Health Promotion Center, Niigata, Japan