1. Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr-City, Cairo, Egypt
2. Department of Mathematics and Statistics, Institute of Southern Punjab, Multan, Pakistan
3. Department of Computer Engineering, Biruni University, Istanbul, Turkey
4. Department of Mathematics, Faculty of Science, Firat University, Elazig, Turkey
5. Department of Medical Research, China Medical University, Taichung, Taiwan