Akhtar, M. S.; Butt, M. Q.; Razzaq, S.; Usman, S.; Akhtar, M. U. COMPARISON OF LATERAL ANAL SPHINCTEROTOMY WITH 0.2% GTN IN CHRONIC ANAL FISSURE: Lateral Anal Sphincterotomy in Chronic Anal Fissure. PAFMJ 2018, 68, 491-96.