1 Department of Endocrinology, Genetics and Metabolism, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, MOE Key Laboratory of Major Diseases in Children, Beijing Key Laboratory for Genetics of Birth Defects, Beijing 100045, China.
2 Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.