1. School of Mathematics and Statistics, Xi’an Jiaotong University, China
2. University of Canberra, Australia
3. Department of Finance, Fintech Center, and Big Data Research Center, Asia University, Taichung City, Taiwan
4. Department of Medical Research, China Medical University Hospital, Taichung City, Taiwan
5. Department of Economics and Finance, The Hang Seng University of Hong Kong, Siu Lek Yuen, Hong Kong