1. Department of Mathematics, Azarbaijan Shahid Madani University, Tabriz, Iran
2. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
3. Laboratory of Applied Mathematics, Kasdi Merbah University, Ouargla B.P. 511 30000, Algeria
4. Department of Mathematics, Faculty of Basic Science, Bu-Ali Sina University, Hamedan, Iran
5. Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
6. Department of Mathematics and Computer Science, St. Thomas College, Bhilai, Chhattisgarth 49006, India