Imbelloni, Luiz Eduardo, Marildo Assunção Gouveia, and José Antonio Cordeiro. “Continuous Spinal Anesthesia Versus Combined Spinal Epidural Block for Major Orthopedic Surgery: Prospective Randomized Study”. São Paulo Medical Journal 127, no. 1 (January 1, 2009): 7–11. Accessed March 12, 2025. https://periodicosapm.emnuvens.com.br/spmj/article/view/1839.