Vangapalli, N., Annepu, K. K., Priyadarshini, P. C. and Alugolu, M. (2022) “Randomized controlled study comparing a isobaric levobupivacaine to a conventional dose of hyperbaric bupivacaine for infra umbilical surgeries”, International journal of health sciences, 6(S4), pp. 2513–2524. doi: 10.53730/ijhs.v6nS4.7603.