Dr. G.Venkata Naidu, Dr. Rameswari Prabhu, Dr. R. Sasidhar. “Comparative Study of Post-Operative Pain Score in Open Sphincterotomy and Closed Sphincterotomy For Anal Fissure”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 14, no. 2, June 2024, pp. 154-9, https://ijprt.org/index.php/pub/article/view/742.