1. Department of Economics, Hong Kong Baptist University, The Wing Lung Bank Building for Business Studies, 34 Renfrew Road, Kowloon Tong, Kowloon, Hong Kong, P. R. China
2. Department of Economics, Hong Kong Baptist University, Hong Kong, P. R. China
3. Business, Economic and Public Policy Research Centre, Hong Kong Shue Yan University, Hong Kong, P. R. China