1. Department of Software Engineering, Faculty of Engineering and Architecture, Antalya Akev University, TR-07525 Antalya, Turkey,
2. Department of Mathematics, Faculty of Science, University of Akdeniz, TR-07058 Antalya, Turkey,
3. Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia V8W 3R4, Canada
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan, Republic of China