S., Venkatesh, Srinivas B. Kulkarni, and Kruthi S. R. “Topical Diltiazem Versus Topical Glyceryl Trinitrate in the Treatment of Chronic Anal Fissure: A Prospective Comparative Study”. International Surgery Journal 6, no. 4 (March 26, 2019): 1127–1130. Accessed February 20, 2026. https://www.ijsurgery.com/index.php/isj/article/view/4114.