Tovar-Gutiérrez, A., Camelo-Rincón, J. E., Vásquez-Gómez, Óscar I., & Cadavid-Puentes, A. M. (2021). Continuous erector spinae plane block at lumbar level for relief of severe pain due to hip fracture: case series. Colombian Journal of Anesthesiology, 49(4). https://doi.org/10.5554/22562087.e962