Ahmad, Haron, and Akhtar Qureshi. “Therapeutic Hepato-Biliary Endoscopy: Future Trends”. Siriraj Medical Journal 51, no. 4 (April 1, 1999): 293–294. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/264937.