Esmeal, M.E.A. et al. 2019. Evaluation of First Trimester Miscarriage among Sudanese Woman in Khartoum State Using Ultrasonography. International Journal of Innovative Research in Medical Science. 4, 12 (Dec. 2019), 647 to 651. DOI:https://doi.org/10.23958/ijirms/vol04-i12/784.