B. O. Obande, E. C. Iyidobi, G. O. Eyichukwu, C. U. Nwadinigwe, R. T. Ekwunife, and O. Ede, “Is the femoral neck-shaft angle an independent risk factor for hip fractures? An observational study”, Int J Res Orthop, vol. 5, no. 6, pp. 1032–1036, Oct. 2019.