Sumit Das, Pritam Yadav, Sanjay Johar, Naveen Malhotra, Irin Saha, Ritu Rathee. A study to evaluate the efficacy of instillation of ropivacaine with fentanyl, dexmedetomidine, or morphine through surgical drain for post-operative analgesia in patients undergoing modified radical mastectomy. Asian J Med Sci [Internet]. 2023 Jul. 1 [cited 2024 Jul. 17];14(7):69-75. Available from: https://nepjol.info/index.php/AJMS/article/view/49686