Shah B, Sharma U, Patel R, Maharaul HH. Management of acute anal fissure with open and closed internal sphincterotomy. Int. J. of Health Sci. [Internet]. 2022 Apr. 8 [cited 2026 May 16];6(S4):726-33. Available from: https://www.sciencescholar.us/journal/index.php/ijhs/article/view/5661