Singh S, Sidhu V, Kumar A, Singh B, Walia BS. A prospective study on the outcomes of lateral internal sphincterotomy for chronic anal fissure. Int Surg J [Internet]. 2025 Sep. 25 [cited 2025 Oct. 2];12(10):1712-6. Available from: https://www.ijsurgery.com/index.php/isj/article/view/11391