P. O. U. Adogu, N. B. Egenti, C. F. Ubajaka, J. C. Anakwue, and A. I. Ugezu, “Epidemiological pattern and outcome of head injuries during festive and non-festive periods in a tertiary hospital, Nnewi, Nigeria”, Int J Res Med Sci, vol. 3, no. 10, pp. 2718–2724, Jan. 2017.