1. Lee Shau Kee School of Business & Administration, Open University of Hong Kong; 30 Good Shepherd Street, Ho Man Tin, Kowloon Hong Kong China
2. Department of Economics; Hong Kong Baptist University; Kowloon Tong, Kowloon Hong Kong China
3. Department of Economics and Finance; City University of Hong Kong; Tat Chee Avenue, Kowloon Hong Kong China