1. Department of Mathematics, University of Swabi, Khyber Pakhtunkhwa, Pakistan
2. Department of Mathematics and Science, International University of Science and Technology, Kuwait, Kuwait
3. Operational Research Center in Healthcare, Near East University, Nicosia/Mersin, Turkey + Section of Mathematics, International Telematic University Uninettuno, Roma, Italy
4. Department of General Education, Faculty of Science and Health Technology, Navamindradhiraj University, Bangkok, Thailand
5. Department of Statistics, Faculty of Science, Ramkhamhaeng University, Bangkok, Thailand