Comparative Study of Small Dose Bupivacaine-fentanyl vs. Normal Dose of Bupivacaine in Spinal Anaesthesia for Patient Above 60 Years Old Undergoing Surgery. Medico Legal Update, [S. l.], v. 20, n. 4, p. 1672–1676, 2020. DOI: 10.37506/mlu.v20i4.2080. Disponível em: https://ijop.net/index.php/mlu/article/view/2080. Acesso em: 24 may. 2026.