Bootthumpan, Orawan, Kingkarn Klinungkab, Varanporn Panasittivana, Tiwaporn Donthong, and Wasana Lavin. 2025. “Factors affecting Mortality in Patients with COVID-19: After the Declaration of an Endemic Disease”. Journal of The Royal Thai Army Nurses 26 (1):331-37. https://he01.tci-thaijo.org/index.php/JRTAN/article/view/274982.