ÇETİN, Celalettin, Sait BAĞCI, Ahmet UYGUN, Mustafa GÜLŞEN, Abdurrahman KADAYIFÇI, Necmettin KARAEREN, and Kemal DAĞALP. “Needle-Knife Papillotomy As a Second Step Procedure”. Turkish Journal of Gastroenterology 11, no. 2 (January 2, 2000): 121–125. Accessed January 1, 2026. https://www.turkjgastroenterol.org/index.php/tjg/article/view/1056.