1. Economics and Management School, Wuhan University, Wuhan, Hubei, China
2. Department of Statistical and Actuarial Sciences, The University of Western Ontario, London, Ontario, Canada
3. Division of Physical Sciences and Mathematics, University of the Philippines Visayas, Iloilo, Philippines
4. Wuhan University & Ningbo National Institute of Insurance Development (NIID), Ningbo, Zhejiang, China
5. Department of Mathematics, Southern University of Science and Technology, Shenzhen, Guangdong Province, China