Dr. Umair Ahmed (2023) “TREATING CHRONIC ANAL FISSURE: A NON-RANDOMIZED CONTROLLED TRIAL COMPARING BOTULINUM TOXIN INJECTION AND LATERAL INTERNAL SPHINCTEROTOMY”, Journal of Population Therapeutics and Clinical Pharmacology, 30(19), pp. 801–806. doi:10.53555/jptcp.v30i19.3758.