Rojratsirikul, Chalermporn. “Incidence and associated factors of negative appendectomy and ruptured appendicitis in PMSMC”. Chulalongkorn Medical Journal 53, no. 4 (October 6, 2023). accessed September 11, 2026. https://he05.tci-thaijo.org/index.php/CMJ/article/view/969.