Leelouhapong , Charay. “A Comparison of the Effects of Acute Abdomen During the COVID-19 Outbreak under Declaring Emergency Situation Pranangklao Hospital Nonthaburi Province”. Journal of The Department of Medical Services 47, no. 1 (March 31, 2022): 87–93. Accessed April 25, 2024. https://he02.tci-thaijo.org/index.php/JDMS/article/view/251815.