1. Department of Math & Stats, International Islamic University Islamabad, Pakistan
2. Université de Sousse, Institut Supérieur d’Informatique et des Techniques de Communication, H. Sousse 4000, Tunisia
3. China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
4. Department of Mathematics & Statistics, International Islamic University, H-10, Islamabad 44000, Pakistan
5. College of Business Administration-Finance Department, Dar Al Uloom University Saudi Arabia, Saudi Arabia