1. Faculty of Economic Sciences and Business Administration, Transilvania University of Brașov, Brașov, Romania
2. School of Tourism and Geography Science, Qingdao University, Qingdao, People’s Republic of China
3. Department of Aviation Service Management, Silla University, Busan, Korea
4. Department of Food Service and Management, Faculty of Food Science and Technology, Universiti Putra Malaysia, Selangor, Malaysia
5. College of Hospitality and Tourism Management, Sejong University, Seoul, Korea