Bootthumpan, Orawan, Wasana Lavin, and Porntip Yooyadmak. “Factors Related to Mortality among Patients with COVID-19 in the Intermediate Care Unit”. Health Science Journal of Thailand 6, no. 1 (January 24, 2024): 27–33. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/HSJT/article/view/262064.