Comparison Of Hyperbaric Bupivacaine In Conventional Dose To Isobaric Levobupivacaine Used For Infra Umbilical Surgeries. Journal of Pharmaceutical Negative Results, [S. l.], v. 13, p. 441–445, 2022. DOI: 10.47750/pnr.2022.13.S05.69. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/2170.. Acesso em: 23 jun. 2026.