Shukla, Arvind, Abhay Brahmane, Yogesh H. S., and Kovarthanan P. “A Comparison of Lateral Internal Sphincterotomy Versus Subcutaneous Fissurectomy under Local Anaesthesia With 2% Diltiazem Gel in the Management of Chronic Fissure in Ano: Prospective Study”. International Surgery Journal 9, no. 7 (June 27, 2022): 1299–1304. Accessed February 20, 2026. https://www.ijsurgery.com/index.php/isj/article/view/8861.