Das, Chittaranjan, Ashis Saha, Faruk Hossain, Md Mokhlesur Rahman, Rakibul Hasan, and AHM Towhidul Alam. “Efficacy of Endoscopic Retrograde Cholangiopancreato-Graphy in Elderly Patients”. Bangladesh Medical Journal 45, no. 1 (July 30, 2016): 44–46. Accessed October 12, 2025. https://www.banglajol.info/index.php/BMJ/article/view/28967.