1. Department of Sciences and Humanities, National University of Computer and Emerging Sciences, Lahore, Pakistan
2. Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II, 39, 00186 Roma, Italy
3. Near East University, Operational Research Center in Healthcare, Nicosia, PC: 99138, TRNC Mersin 10, Turkey
4. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
5. Department of Mathematics, College of Science, King Saud University, Riyadh 11451, Saudi Arabia