Jakati, Dr. Rani Shankar, et al. “Comparison of the Effect of Intrathecal Morphine and Intrathecal Fentanyl As Adjuvants to 0.5% Levobupivacaine in Total Knee Replacement Surgery”. Adolescência E Saúde, Sept. 2026, pp. 163-74, doi:10.67440/ahj.vi.1966.