Sangineni, K. S. D., Deolalkar, A., Parakh, S. C., & Rajuloo, D. D. (2016). Double blind randomized comparative study of transdermal fentanyl patch for post operative pain relief in major abdominal surgery as a component of multimodal analgesic therapy. International Journal of Basic & Clinical Pharmacology, 5(1), 13–20. https://doi.org/10.18203/2319-2003.ijbcp20160077