Muhammad Bilal Khattak, Ehtisham Haider, Muhammad Hafeez, Khawar Shabir, Rafiudin, Khan H. 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 [Internet]. 2024 Dec. 16 [cited 2025 Mar. 14];36(4 (Suppl 1). Available from: https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/13953