1. School of Management, University of Science and Technology of China, Hefei, Anhui, P.R. China
2. Center for Crisis Management Research (Sponsored by Beijing Planning Office of Philosophy & Social Science), School of Public Policy and Management, Tsinghua University, Beijing, P.R. China
3. School of Accounting, Nanjing Audit University, Nanjing, Jiangsu, P.R. China