1. Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt
2. Institut Supérieur d’Informatique et des Techniques de Communication, Université de Sousse, H. Sousse, Tunisia
3. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa
4. China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
5. Institute of Research and Development of Processes, University of the Basque Country, 48940- Leioa (Bizkaia), Spain