1. Department of Mathematics, King Saud University, P.O.Box 22452, Riyadh 11495, Saudi Arabia
2. Department of Mathematics, Saudi Electronic University, Riyadh, Saudi Arabia
3. Department of Mathematics, Government College university, Faislabad, pakistan
4. Department of Mathematics, Çankaya University, Ankara, Turkey
5. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
6. Department of Mathematics, King Abdulaziz University, Jeddah, Saudi Arabia
7. Department of Mathematics and Statistics, College of Science, Taif University, P.O.Box 11099, Taif 21944, Saudi Arabia