Halvadia, S. H., Halvadia, H. B., Joshi, R. M. and Upadhyaya, D. P. (2013) “Low Dose Bupivacaine - Fentanyl Vs. Conventional Dose Of Bupivacaine In Spinal Anesthesia For Orthopaedic Procedures In Elderly Patients: Low Dose Bupivacaine - Fentanyl Vs. Conventional Dose Of Bupivacaine”, National Journal of Integrated Research in Medicine, 4(1), pp. 50–56. doi: 10.70284/njirm.v4i1.2127.