Mohamed, M. A., M. Gar-elnabi, M. A. Alseed, E. A. Abdulla, I. A. Hassan, A. Ibraheem, and F. Dahy. “Evaluation Of Uterine Blood Flow In Threaten Abortion Using Color Doppler”. Asian Journal of Medical Radiological Research, Vol. 1, no. 2, June 2013, pp. 1-3, http://aijournals.com/index.php/ajmrr/article/view/35.