Edrees, Nadal Ahmed, and Omer Fadol Edris. “Determination of Membrane Intracellular and Plasma Magnesium and Calcium Concentration in Preeclampsia: A Cross Sectional Study”. International Journal of Pharmacological Research, vol. 6, no. 10, Nov. 2016, pp. 322-4, https://doi.org/10.7439/ijpr.v6i10.3536.