Institute of Nutrition and Food Safety;
Chinese Center for Disease Control and Prevention;
Beijing 100050;
China;
Department of Endocrinology;
the First Hospital of Chaoyang;
Liaoning Province;
China;
Center for Disease Control and Prevention of Ningxia Autonomous Regio;
n Yinehuan 750004;
Ningxia Hui Minority Autonomous Region;
China;
Sichuan Center for Disease Control and Prevention;
Chengdu 610031;
Sichuan Province;
China;
Huangshi Institute of Health Inspection;
Huangshi 435000;
Hubei Province;
China;