Techapongsatorn, S., P. Kanjanasuthirak, and S. Srimantayamas. “Abstract Endoscopic Finding in Corrosive Ingestion”. Vajira Medical Journal : Journal of Urban Medicine, vol. 50, no. 1, Sept. 2011, pp. 33-38, https://he02.tci-thaijo.org/index.php/VMED/article/view/270.