1. Department of Mathematics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 602 105, Tamil Nadu, India
2. Department of Mathematics, Radfan University College, University of Lahej, Lahej, Yemen
3. Department of Mathematics, College of Science, Korea University, Seoul 02814, South Korea
4. Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
5. Department of Mathematics and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
6. Department of Medical Research, China Medical University, Taichung 40402, Taiwan
7. Department of Mathematics, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
8. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Garankuwa, Medusa 0204, South Africa