1. Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia
2. NUTECH, School of Applied Sciences and Humanities, National University of Technology, Islamabad, Pakistan
3. Department of Mathematics and Statistics, International Islamic University, Islamabad, Pakistan
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
5. Department of Mathematics, Faculty of Science, The Hashemite University, Zarqa, Jordan
6. Department of Mathematics and Sciences, Dhofar University, Salalah, Oman