Aguirre-Ospina, O. D. ., González-Maldonado, J. F. ., & Ríos-Medina, Ángela M. . (2015). Ergonomics in ultrasound-guided nerve blocks. Colombian Journal of Anesthesiology, 43(4), 331–339. Retrieved from https://www.revcolanest.com.co/index.php/rca/article/view/356