“A Prospective Comparative Study of Levobupivacaine Hydrochloride 0.5% With Ropivacaine Hydrochloride 0.75% for Peri-Operative Epidural Anesthesia in Infra- Umbilical Surgeries”. Asian Journal of Medical Sciences, vol. 15, no. 12, Dec. 2024, pp. 33-39, https://doi.org/10.3126/ajms.v15i12.69595.