T. Surya Sravanthi; Remella Manoj; B.S.T. Sai. Comparative Study of 0.25% Bupivacaine Versus 0.25% Bupivacaine With Fentanyl for Caudal Epidural Anaesthesia and Analgesia in Children Undergoing Infra Umbilical Surgeries. Int. J. Heal. Clin. Res. 2022, 5, 1096-1098.