1. Department of Applied Mathematics, University of Mazandaran 1 , Babolsar, Iran
2. Department of Mathematical Sciences, University of South Africa 2 , UNISA0003, South Africa
3. Department of Medical Research, China Medical University Hospital, China Medical University 3 , Taichung 110122, Taiwan
4. Faculty of Mathematical Sciences, Shahrood University of Technology 4 , Shahrood, Iran
5. Department of Mechanical Engineering, Babol University of Technology 5 , Babol, Iran