1. Department of Mathematics, Islamic Azad University, Karaj Branch, Karaj, Iran
2. Department of Mathematics, Faculty of Sciences, Al-Azhar University, Assiut 71524, Egypt
3. Department of Mathematics, College of Al Wajh, University of Tabuk, Tabuk, Saudi Arabia
4. Department of Mathematics, College of Education of Jubail, Imam Abdulrahman Bin Faisal University, P.O. 12020, Industrial Jubail 31961, Saudi Arabia
5. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan