1 Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
2 Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
3 Department of Obstetrics, Hubei Maternal and Child Health Hospital, Wuhan, China.
4 Department of Integrated Traditional and Western Medicine, Hubei Maternal and Child Health Hospital, Wuhan, China.
5 Department of Obstetrics and Gynecology, The Central Hospital of Wuhan, Wuhan, China.
6 Jiang'an Maternal and Child Health Hospital, Wuhan, China.
7 Institute of Health Education, Hubei Provincial Center for Disease Control and Prevention, Wuhan, China.