MOHAMMAD ZAHID HASAN ASKRI AN. Botulinum Toxin Injection Versus Lateral Internal Sphincterotomy for Chronic Anal Fissure: A Randomized Trial. J Fatima Jinnah Med Univ [Internet]. 2018 Jul. 15 [cited 2024 May 18];8(2). Available from: https://jfjmu.com/index.php/ojs/article/view/404