Comparison of Hyperbaric Bupivacaine Alone versus Bupivacaine with Fentanyl for Spinal Anesthesia in Lower Abdominal and Lower Limb Surgery. The Planet, [S. l.], v. 10, n. 3, p. 662–666, 2026. DOI: 10.5281/zenodo.23114187. Disponível em: https://bdjournals.org/planet/article/view/1522. Acesso em: 4 oct. 2026.