Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, China. Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China. Undergraduate of College of Public Health, Hebei Medical University, Shijiazhuang, China. Undergraduate of College of Basic Medicine, Hebei Medical University, Shijiazhuang, China. Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Hebei Province Key Laboratory of Environment and Human Health, Shijiazhuang, China. Electronic address: mayuxia@hebmu.edu.cn.