Muhammad Bilal Khattak, Ehtisham Haider, Muhammad Hafeez, Khawar Shabir, Rafiudin, and H. Khan, “COMPARISON OF EARLY NEEDLE-KNIFE SPHINCTEROTOMY VS STANDARD BILIARY CANNULATION IN PREVENTING ERCP ASSOCIATED PANCREATITIS IN CASES OF DIFFICULT BILIARY CANNULATION -A TERTIARY CARE EXPERIENCE”, J Ayub Med Coll Abbottabad, vol. 36, no. 4 (Suppl 1), Dec. 2024.