IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-4-34628 Original Research Paper Prospective Randomized Study between Open Vs Closed Lateral Anal Internal Sphincterotomy in Patients with Chronic Fissure in Ano at SKMCH, Muzaffarpur, Bihar Kumar Vikram Dr. Dr. Manoj Kumar Dr. April 2021 10 4 01 02