AKAY, Sinan, et al. “Results of Endoscopic Management of Anastomotic Biliary Strictures After Orthotopic Liver Transplantation”. Turkish Journal of Gastroenterology, vol. 17, no. 3, Jan. 2006, pp. 159-63, https://www.turkjgastroenterol.org/index.php/tjg/article/view/1498.