1. School of Hospitality Management, Macao Institute for Tourism Studies, Macao, China
2. Division of Business and Hospitality Management, College of Professional and Continuing Education, The Hong Kong Polytechnic University, Hong Kong, SAR, China
3. School of Continuing Education, Macao Institute for Tourism Studies, Macao, China
4. Faculty of Management and Economics, Kunming University of Science and Technology, Kunming, China