National Clinical Research Center for Child Health and Disorders - Key Laboratory of Child Development and Disorders, Chongqing Medical University - Department of Epidemiology and Biostatistics, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Southern University of Science and Technology, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Nanjing Medical University, Guangdong Provincial People's Hospital and Cardiovascular Institute, Fujian Medical University - Fujian Provincial Hospital, Shandong University, Shandong University, Changshu Center for Disease Control and Prevention, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital, Shenzhen University, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital and Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital