1 Shenzhen Center for Chronic Disease Control, Shenzhen 518020, Guangdong, China;Key Laboratory of Trace Element Nutrition of National Health Commission, National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
2 Shenzhen Center for Chronic Disease Control, Shenzhen 518020, Guangdong, China.
3 Changzhi Medical College, Changzhi 047500, Shanxi, China.
4 Key Laboratory of Trace Element Nutrition of National Health Commission, National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.