Dr. Leena Goel, et al. “Comparative Efficacy of Fentanyl Vs Dexmedetomidine Intrathecally As AnAdjuvent to Isobaric Levo-Bupivacaine in Infra-Umbilical Surgery: AProspective Randomized Study”. IAR Journal of Medicine and Surgery Research, vol. 4, no. 6, Dec. 2023, pp. 14-19, https://doi.org/10.47310/iarjmsr.2023.V04i06.04.