1. The Key Laboratory of Intelligent Information and Data Processing of NingXia Province, North Minzu University, Yinchuan 750021, China
2. Department of Risk Management and Insurance, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
3. Center for Fundamental Science and Research Center for Nonlinear Analysis and Optimization, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
4. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan