Sharma, Deepak, Daljit Kaur, Bilal Ahmad, Abhishek Kumar, and Divya Agarwal. “Clinical Evaluation of Adding Solitary Dose of Magnesium to Fentanyl on Post-Operative Analgesia During Combined Spinal Epidural Technique for Hip Replacement Procedures”. International Journal of Research in Medical Sciences 6, no. 4 (March 28, 2018): 1258–1263. Accessed September 30, 2025. https://www.msjonline.org/index.php/ijrms/article/view/4572.