1. Department of Statistics, East China Normal University, Shanghai, People's Republic of China
2. KLATASDS-MOE, East China Normal University, Shanghai, People's Republic of China
3. School of Statistics and Mathematics, Shanghai Lixin University of Accounting and Finance, Shanghai, People's Republic of China
4. School of Statistics, Capital University of Economics and Business, Beijing, People's Republic of China
5. School of Statistics and Information, Shanghai University of International Business and Economics, Shanghai, People's Republic of China