E. ul Hassan, Ayesha Choudary, Hina Khan, S. H. Changazi, S. Bhatti, and Q. A. Ahmad, “Outcomes of Closed Versus Open Lateral Internal Anal Sphincterotomy for Chronic Anal Fissure: A Randomized Controlled Trial”, J Fatima Jinnah Med Univ, vol. 20, no. 2, pp. 72–77, Aug. 2026, doi: 10.37018/XCVB0327.