1. Department of Food Service and Management, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
2. School of Hotel and Tourism Management, Hong Kong Polytechnic University, TST East, Kowloon, Hong Kong SAR
3. Department of Tourism Management, College of Business Administration, Keimyung University, Daegu, South Korea
4. Department of Hotel and Foodservice Management, Cheongju University, Cheongju-si, Korea
5. College of Hospitality and Tourism Management, Sejong University, Seoul, Korea