Elmugabil, Abdelmageed, Duria A. Rayis, Mohamed A. Ahmed, Ishag Adam, and Gasim I. Gasim. 2016. “O Blood Group As Risk Factor for Preeclampsia Among Sudanese Women”. Open Access Macedonian Journal of Medical Sciences 4 (4):603-6. https://doi.org/10.3889/oamjms.2016.108.