Rattanathumsakul, T., C. Sansilapin, C. Srinakarin, A. Mungaomklang, P. Thammawijaya, and C. Pittayawonganon. “An outbreak investigation of peptic ulcer perforation in Bua Yai, Bua Lai and Sida Districts, Nakhon Ratchasima Province, Thailand, 2015”. Weekly Epidemiological Surveillance Report, vol. 48, no. 5, May 2024, pp. 65-73, https://he05.tci-thaijo.org/index.php/WESR/article/view/2193.