Sothanapaisan, K., and C. Suwitchakul. “Post-ERCP Pancreatitis in Patient Undergo Needle-Knife Sphincterotomy Versus Transpancreatic Sphincterotomy”. Journal of the Association of General Surgeons of Thailand under the Royal of Patronage of HM the King, vol. 6, no. 2, Sept. 2021, pp. 35-42, https://he02.tci-thaijo.org/index.php/agstjournal/article/view/252804.