Khalid, A. K., Amr, E. S., Reem, E., Wael, R., Manal, E. M., Ramy, G., Ahmed, N. (2018). Role of hydroxyurea as an adjuvant treatment after Gamma knife radiosurgery for atypical (WHO grade II) meningiomas. Journal of the Egyptian National Cancer Institute. https://doi.org/10.1016/j.jnci.2018.04.001