1. Department of Mathematics and Statistics, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) , Riyadh: 11566 , Saudi Arabia
2. Department of Mathematics, Faculty of Science, Benha University , Benha , Egypt
3. Operational Research Center in Healthcare, Near East University , Nicosia , PC: 99138, TRNC Mersin 10 , Turkey
4. Department of Mathematics, Faculty of Science, Islamic University of Madinah , Medina , Saudi Arabia