1. Department of Maternal and Child Health School of Public Health Tongji Medical College Huazhong University of Science and Technology Wuhan China
2. Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating) School of Public Health Tongji Medical College Huazhong University of Science and Technology Wuhan China
3. Department of Laboratory Medicine Wuhan Children's Hospital Tongji Medical College Huazhong University of Science & Technology Wuhan China
4. Department of Cardiology Kailuan Hospital North China University of Science and Technology Tangshan City China
5. Department of Epidemiology and Biostatistics School of Public Health Peking University Beijing China