1 Department of Nephrology, Key Laboratory of Major Diseases in Children, Ministry of Education, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China.
2 Department of Nephrology, Key Laboratory of Major Diseases in Children, Ministry of Education, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China. wanghui@bch.com.cn.
3 Department of Nephrology, Key Laboratory of Basic and Clinical Pediatric Nephrology, Regional Center for Children's Health, Baoding Hospital of Beijing Children's Hospital, Capital Medical University, Baoding, China. wanghui@bch.com.cn.