IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-7-35951 Original Research Paper Comparison of efficacy of transdermal fentanyl patch with buprenorphine patch post-operative pain relief in abdominal surgeries. Chadha Poorvi Dr. Dr Moin Khayyam Dr. July 2021 10 7 01 02