“Efficacy of Per Rectal Non-Steroidal Anti-inflammatory Drugs to Prevent Post Endoscopic Retrograde Cholangiopancrea-tography Pancreatitis: A Comparative Study”, Bangla J Med, vol. 32, no. 2, pp. 99–106, Jun. 2021, doi: 10.3329/bjm.v32i2.53796.