1. Division of Nephrology and Endocrinology; The University of Tokyo Graduate School of Medicine; Tokyo Japan
2. Department of Nephrology; Tokyo Metropolitan Children's Medical Center; Fuchu Tokyo Japan
3. Department of Pediatrics; Shiga University of Medical Science; Otsu Shiga Japan
4. Department of Pediatrics; Osaka Medical College; Takatsuki Osaka Japan
5. Department of Pediatrics; Osaka City General Hospital; Miyakojima Osaka Japan
6. Department of Pediatrics; Shinshu University School of Medicine; Matsumoto Nagano Japan
7. First Department of Internal Medicine; Kyorin University School of Medicine; Mitaka Tokyo Japan
8. Department of Nephrology; Nagoya University Graduate School of Medicine; Nagoya Aichi Japan
9. Kichijoji Asahi Hospital; Musashino Tokyo Japan
10. Department of Pediatrics; Graduate School of Medicine; Yokohama City University; Kanazawa Yokohama Japan
11. Department of Pediatric Nephrology; Tokyo Women's Medical University; Shinjuku Tokyo Japan
12. Department of General Internal Medicine; Faculty of Medicine; Saitama Medical University; Iruma Saitama Japan
13. Department of Blood Transfusion Medicine; Nara Medical University; Kashihara Nara Japan
14. Department of Nephrology; Faculty of Medicine; Saitama Medical University; Iruma Saitama Japan
15. Department of Pediatrics; Graduate School of Medical Sciences; Tokushima University; Tokushima Japan