T. . Tasuwanin, A. Boonjit, C. Sukkai, K. Sangchan, D. Kongsuwan, and P. Wong-a-thitikul, “Factors Related to Self - Care Behaviors in the Situation of the Pandemic of Coronavirus 2019 among People in Chiang Rai Province”, KJN, vol. 28, no. 2, pp. 77–92, Dec. 2021.