1. Faculty of Science, Department of Mathematics, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok, Thailand.
2. KMUTT-Fixed Point Theory and Applications Research Group, Theoretical and Computational Science Center (TaCS), Science Laboratory Building, Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok, Thailand.
3. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.