1. Department of Pediatrics; Shiga University of Medical Science; Otsu Japan
2. Division of Nephrology and Endocrinology; University of Tokyo School of Medicine; Tokyo Japan
3. Department of Pediatrics; Osaka Medical College; Takatsuki Japan
4. Department of Pediatrics; Osaka City General Hospital; Osaka Japan
5. Department of Nephrology; Tokyo Metropolitan Children's Medical Center; Fuchu Japan
6. Department of Pediatrics; Shinshu University School of Medicine; Matsumoto Japan
7. First Department of Internal Medicine; Kyorin University School of Medicine; Mitaka Japan
8. Department of Nephrology; Faculty of Medicine; Saitama Medical University; Saitama Japan
9. Department of Nephrology; Nagoya University Graduate School of Medicine; Nagoya Japan
10. Division of Nephrology and Hypertension; Department of Medicine; St Marianna University School of Medicine; Kawasaki Japan
11. Department of Blood Transfusion Medicine; Nara Medical University; Kashihara Japan
12. Department of Pediatric Nephrology; Tokyo Women's Medical University; Tokyo Japan
13. Department of Pediatrics; Graduate School of Medical Sciences; Tokushima University; Tokushima Japan