1 Department of Nephrology, National Hospital Organization Chibahigashi National Hospital, 673 Nitona-cho, Chuo-ku, Chiba, 260-8712, Japan. kawatake45@gmail.com.
2 Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan.
3 Department of Nephrology, Nara Medical University, Nara, Japan.
4 Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan.
5 Department of Nephrology and Rheumatology, Aichi Medical University, Aichi, Japan.
6 Department of Nephrology and Hypertension, Osaka City General Hospital, Osaka, Japan.
7 Department of Nephrology, Mie University, Mie, Japan.
8 Department of Nephrology and Rheumatology, National Center for Child Health and Development, Tokyo, Japan.
9 Department of Pediatrics, Osaka Medical College, Osaka, Japan.
10 Department of Pediatrics, Kosei General Hospital, Tokyo, Japan.
11 Department of Pediatrics, Matsudo City General Hospital, Chiba, Japan.
12 Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan.
13 Department of Pathology, Kobe City Medical Center General Hospital, Kobe, Japan.
14 Department of Nephrology, Nagoya University, Nagoya, Japan.
15 Division of Clinical Nephrology and Rheumatology, Niigata University, Niigata, Japan.
16 Department of Nephrology, Saitama Medical University, Saitama, Japan.
17 Department of Nephrology, Toranomon Hospital, Tokyo, Japan.