Sumit Das, Pritam Yadav, Sanjay Johar, Naveen Malhotra, Irin Saha, & Ritu Rathee. (2023). 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 Journal of Medical Sciences, 14(7), 69–75. https://doi.org/10.3126/ajms.v14i7.49686