1. Department of Mathemtics, Government College University Lahore (GCUL), Lahore 54000, Pakistan
2. Department of Medical Research, China Medical University, Taichung, Taiwan
3. Department of Mathematics and Applied Mathematics, University of Pretoria, Lynnwood road, Pretoria 0002, South Africa
4. Center of Research, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
5. Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia