Ruksakulpiwat S, Zhou W, Chiaranai C, Vonck JE. Human Travelling and COVID-19 Pandemic. Siriraj Med J [Internet]. 2021 Sep. 1 [cited 2024 May 6];73(9):562-9. Available from: https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/253022