Wirtu, A. T., Geneti, S. A., Zenebe, A. M., Ewnetu, S. A., & Gemechu, J. M. (2018). Incidence of persistent metopic suture and extra sacral foramina in Ethiopian population. Italian Journal of Anatomy and Embryology, 123(2), 108–113. https://doi.org/10.13128/IJAE-24159