Sahibzada Haseeb Ahmed, Yasir Mehmood, Sajid Uthmanzai, Muhammad Shoaib, M.Arsalan Azmat Swati, M Kashif, “Incidence of Misplaced Pedicle Screw in Free Hand Technique in Spine Fixation Patients”, Pakistan Journal of Medical & Health Sciences, vol. 16, no. 07, p. 805, Sep. 2022.