Shreya Putta (2024) “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, 15(12), pp. 33–39. doi: 10.71152/ajms.v15i12.4190.