Aleixo, C., J. Marinhas, F. Santos, R. Freitas, and R. S. Pereira. “Life-Threatening Retroperitoneal Hematoma After Percutaneous Vertebroplasty for Lumbar Fracture”. International Journal of Research in Orthopaedics, vol. 6, no. 4, June 2020, pp. 840-3, doi:10.18203/issn.2455-4510.IntJResOrthop20202695.