1. Institute of Reproductive and Child Health, National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, China
2. Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
3. Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
4. Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
5. Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, China
6. Departments of Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, TX, USA