Bello, S. S., A, D. Zagga, S. B. Kalale, J. D. Usman, A. Bello, A. Abdulhameed, S. M. Bello, and A. A. Tadros. 2013. “Measurements of Foramen Magnum Using Computerised Tomography in Sokoto State, Nigeria”. International Journal of Health and Medical Information (IJHMI) 2 (2):29-35. http://icidr.org.ng/index.php/Ijhmi/article/view/640.