Isabelle, M. J., Steeve, M., Mylène, M.-M., Mpori, J., Aude, L. M., Simon, A., Yvonne, A.-Z., & Philomène, K. N. (2018). Prevalence of headaches in children in schools: the case of primary schools in Libreville. International Journal of Medical Science and Clinical Invention, 5(4), 3764–3767. https://doi.org/10.18535/ijmsci/v5i4.11