1. Department of Mathematics, Faculty of Science, Assiut University, Assiut 71516, Egypt
2. Department of Mathematics, College of Science and Arts, Unaizah 56264, Qassim University, Qassim, Saudi Arabia
3. University of Aden, Department of Mathematics, Aden, Yemen
4. Université de Sousse, Institut Supérieur d’Informatique et Des Techniques de Communication, H. Sousse 4000, Tunisia
5. China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
6. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa