1. Operational Research Center in Healthcare, Near East University, Nicosia, Turkey
2. Charles Chidume Mathematics Institute, African University of Science and Technology, Abuja, Nigeria
3. Department of Mathematics, Illinois State University, Illinois, USA
4. Department of Medical Diagnostic Imaging, College of Health Science, University of Sharjah, Sharjah, UAE
5. Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, UAE