1. Department of Mathematics, Mirpur University of Science and Technology, Mirpur AJ&K (10250), Pakistan
2. Department of Mathematics, Hacettepe University, 06532 Beytepe, Ankara, Turkey
3. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
4. Department of Mechanical Engineering and Technology Management, Norwegian University of Life Sciences, Drøbakveien 31, Ås, 1432, Ås, Norway