1. Department of Epidemiology and Biostatistics, Ministry of Education Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College Huazhong University of Science and Technology Wuhan, Hubei China
2. Department of Epidemiology and Biostatistics, College of Public Health Zhengzhou University Zhengzhou, Henan China
3. Clinical Research and Translation Centre, The First Affiliated Hospital Fujian Medical University Fuzhou, Fujian China
4. Centre for Reproductive Medicine, Department of Obstetrics and Gynaecology, Xiangyang No.1 People’s Hospital Hubei University of Medicine Xiangyang, Hubei China
5. Centre for Reproductive Medicine, Tongji Medical College Huazhong University of Science and Technology Wuhan, Hubei China
6. Hubei Province Human Sperm Bank Wuhan, Hubei China
7. Department of Nutrition Harvard T.H. Chan School of Public Health Boston Massachusetts USA