Zhejiang University - Children's Hospital, Shaoxing Maternity & Child Health Hospital, Zhejiang University - Children's Hospital, Zhejiang University - Children's Hospital, Fuzhou Children's Hospital, Xinjiang Medical University - First Affiliated Hospital, Guangxi Medical University - Second Affiliated Hospital, Guangxi Medical University - Second Affiliated Hospital, Zhejiang Provincial Center for Disease Control and Prevention, Capital Medical University - Beijing Children’s Hospital, Chongqing Medical University - Women and Children's Hospital, Zhejiang University - First Affiliated Hospital, Shenzhen Children's Hospital, Huazhong University of Science and Technology - Tongji Hospital, Huazhong University of Science and Technology - Wuhan Children’s Hospital, Zhengzhou University - Henan Children's Hospital, Tianjin Medical University - General Hospital, Jilin University (JLU) - The First Bethune Hospital, Fudan University - Children's Hospital of Fudan University, Shanghai Jiao Tong University (SJTU) - Children's Hospital, Zhejiang University- School of Public Health, Zhejiang University - Department of Epidemiology & Health Statistics, North China University of Science and Technology - Center for Genomics and Computational Biology and Government of the United States of America - Uniformed Services University of the Health Sciences