Osman Riaz, Noreen Kousar, Muhammad Sabir, Ghulam Murtaza, Muhammad Ahsan, Naveed Akhtar. Comparative Study of Lateral Internal Sphinterotomy versus Anal Advancement Flap in the Treatment of Chronic Anal Fissure: A Randomized Controlled Trial. IJPRT [Internet]. 2026 Aug. 29 [cited 2026 Aug. 30];16(2):3780-6. Available from: https://www.ijprt.org/index.php/pub/article/view/2926