1. Department of Mathematics, Gomal University, Dera Ismail Khan 29050, Pakistan
2. Department of Mathematics, Ghazi University, D G Khan, Pakistan
3. School of Mathematics and Information Science, Henan Polytechnic University, Jiaozuo 454000, China
4. Department of Computer Engineering, Biruni University, Istanbul, Turkey
5. Department of Mathematics, Science Faculty, Firat University, 23119 Elazig, Turkey
6. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan