Lao , Bryan Christopher, Princess Guevarra, and Jose A. Tan,MD Tan. 2021. “Comparatve Study on the Outcomes, Safety and Complicatons of ERCP in Elderly Patients: A Single Center Retrospectve Study”. Philippine Journal of Gastroenterology 10 (2). https://philjgastro.com/index.php/pjg/article/view/22.