1. School of Statistics, Shanxi University of Finance and Economics, Taiyuan, Shanxi, China
2. Department of Anaesthesiology, The Aga Khan University, Karachi, Pakistan
3. Department of Industrial Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia
4. Department of Statistics, College of Science, University of Tabuk, Saudi Arabia
5. Department of Statistics, Quaid-i-Azam University, Islamabad, Pakistan
6. Department of Applied Sciences, National Textile University, Faisalabad, Pakistan
7. School of Information, Shanxi University of Finance and Economics, Taiyuan, Shanxi, China