[1] Sun DJ, Liu SJ, Sun GF, Guan ZH, Guo X. Endemic disease in China. People’s Medical Publishing House, 2017;45. (In Chinese). 
[2] Center for Endemic Disease Control, China CDC. China IDD day. http://210.46.80.29/crcfedc/iddr/iddr.html. [2020-04-29]. (In Chinese). http://210.46.80.29/crcfedc/iddr/iddr.htm
[3] Center for Endemic Disease Control, China CDC. China national iodine deficiency disorders surveillance report. 2019. (In Chinese) .