Qutub, A., F. Abduljabbar, A. Nooh, L. Beckman, L. Bould, T. Steffen, and P. Jarzem. “Fatigue Testing of a Titanium Tapered Rod Versus Two Rods Connected by a Parallel Connector across the Cervicothoracic Junction: A Biomechanical Study”. Journal of King Abdulaziz University - Medical Sciences, vol. 27, no. 1, June 2020, pp. 5-11, doi:10.4197/Med.27-1.2.