Rashid Minhas, Ali Akbar, Muhammad Mushtaq, Rashid Mehmood, Humayun Siiddique, Manzar Ali. “Botulinum Injection and Sphincterotomy for Management of Anal Fissure in Terms of Healing of Anal Fissure: A Randomized Controlled Trial”. Pakistan Journal of Medical & Health Sciences, vol. 17, no. 05, June 2023, p. 117, doi:10.53350/pjmhs2023175117.