1. Department of Mathematics, College of Science and Arts in Gurayat, Jouf University, Gurayat 77454, Saudi Arabia
2. Department of Statistics, Faculty of Computing, The Islamia University, Bahawalpur 63100, Pakistan
3. Department of Mathematics, LMNO, University of Caen, 14032 Caen, France
4. College of Nursing, QU Health, Qatar University, Doha P.O. Box 2713, Qatar