Wenbo Meng, Ping Yue, and Xun Li. “Accurate Biopsy of Bile Duct Without Destroying Duodenal Papilla”. Turkish Journal of Gastroenterology 28, no. 1 (July 25, 2019): 67–68. Accessed July 5, 2025. https://tjg.avesjournals.com/index.php/tjg/article/view/3350.