Calderón-Ochoa, Fernando, et al. “Effectiveness and Safety of Exclusive Spinal Anesthesia With Bupivacaine Versus Femoral Sciatic Block During the Postoperative Period of Patients Having Undergone Knee Arthroscopy: Systematic Review”. Colombian Journal of Anesthesiology, vol. 47, no. 1, Jan. 2019, pp. 57-68, https://www.revcolanest.com.co/index.php/rca/article/view/217.