Junaid, M., A. Afzal, A. Kalsoom, and S. S. Bukhari. “Freehand Pedicle Screw Fixation: A Safe Recipe for Dorsal, Lumbar and Sacral Spine: Freehand Pedicle Screw Fixation”. Pakistan Journal of Medical Sciences, Vol. 35, no. 3, May 2019, doi:10.12669/pjms.35.3.981.