Thitisurawat, Araya, and Setthabutr Eaupanitcharoen. 2024. “Factors Associated with Perforated Appendicitis in Elderly Patients at Debaratana Nakhon Ratchasima Hospital”. Maharat Nakhon Ratchasima Hospital Journal 40 (3). Nakhon Ratchasima,Thailand:171-76. https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/1508.