Sawangsrisutikul, Kanokkarn, Teerasak Chuxnum, Pitiphon Promduangsi, Nipapan Saritapirak, and Rapeepong Suphanchaimat. “Risk Factors of COVID-19 Infection and the Effectiveness of Pre-Flight Screening from an Investigation of an International Flight to Thailand, 2020”. Outbreak, Surveillance, Investigation & Response (OSIR) Journal 16, no. 1 (March 31, 2023): 31–39. Accessed April 20, 2024. https://he02.tci-thaijo.org/index.php/OSIR/article/view/262039.