Nahla F.Omran, Abdelmgeid A.Ali, H. A. S. F. A.- el ghany, E. M. “Stroke Prediction Using Distributed Machine Learning Based on Apache Spark”. International Journal of Advanced Science and Technology, Vol. 28, no. 15, Nov. 2019, pp. 89 -7, http://sersc.org/journals/index.php/IJAST/article/view/1553.