Mushtaque, M., U. Q. Bacha, A. Rashid, T. N. Malik, and S. A. Khanday. “Outcome of Bilateral Versus Unilateral Lateral Internal Sphincterotomy for Chronic Anal Fissures”. International Surgery Journal, vol. 6, no. 6, May 2019, pp. 2154-8, doi:10.18203/2349-2902.isj20192384.