1. Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt
2. Institute of Research and Development of Processes University of the Basque Country, 48940 Leioa, Bizkaia, Spain
3. Institut Supérieur d’Informatique et des Techniques de Communication, Université de Sousse, H. Sousse 4000, Tunisia
4. China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
5. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa