[1
]
Department of Pediatrics, Kobe University Graduate School of Medicine, Chuo-ku, Kobe,
Japan. Electronic address: iijima@med.kobe-u.ac.jp.
[2
]
Division for Clinical Trials, Department of Development Strategy, Center for Social
and Clinical Research, National Research Institute for Child Health and Development,
National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan.
[3
]
Department of Pediatrics, Kobe University Graduate School of Medicine, Chuo-ku, Kobe,
Japan.
[4
]
Department of Health Policy, Center for Social and Clinical Research, National Research
Institute for Child Health and Development, National Center for Child Health and Development,
Setagaya-ku, Tokyo, Japan.
[5
]
Department of General Pediatrics and Interdisciplinary Medicine, National Center for
Child Health and Development, Setagaya-ku, Tokyo, Japan.
[6
]
Department of Nephrology and Rheumatology, National Center for Child Health and Development,
Setagaya-ku, Tokyo, Japan.
[7
]
Department of Pediatrics, Graduate School of Medicine, University of Tokyo, Bunkyo-ku,
Tokyo, Japan.
[8
]
Department of Pediatrics, Okayama University Graduate School of Medicine, Dentistry
and Pharmaceutical Sciences, Shikata-cho, Okayama, Japan.
[9
]
Department of Pediatrics, Wakayama Medical University, Wakayama, Japan.
[10
]
Department of Pediatrics, Juntendo University Nerima Hospital, Nerima-ku, Tokyo, Japan.
[11
]
Department of Pediatrics, Surugadai Nihon University Hospital, Chiyoda-ku, Tokyo,
Japan.
[12
]
Department of Nephrology, Hyogo Prefectural Kobe Children's Hospital, Suma-Ku, Kobe,
Japan.
[13
]
Department of Nephrology, Tokyo Metropolitan Children's Medical Center, Fuchu, Japan.
[14
]
Chuo University, Bunkyo-ku, Tokyo, Japan.