[1] Department of Mathematics, The University of Jordan, Amman, Jordan
[2] Department of Mathematics and general courses, Prince Sultan University, Riyadh, Saudi Arabia
[3] Department of Medical Research, China Medical University Hospital, China Medical University, Taichung,40402, Taiwan
[4] Department of Mathematics, Faculty of Science, The Hashemite University, P.O Box 330127, Zarqa,13133, Jordan