1. Department of Mathematics and Statistics International Islamic University Islamabad Pakistan
2. Department of Mathematics and Sciences College of Humanities and Sciences Prince Sultan University Riyadh Saudi Arabia
3. NUTECH School of Applied Sciences and Humanities National University of Technology 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