1. Division of Tourism and Hotel Management, , Cheongju University, Daesungro, Cheongwon-gu, Cheongju, Republic of Korea
2. College of Hospitality and Tourism Management, Sejong University, Gunja-Dong, Gwanjin-Gu, Seoul, Korea
3. School of Tourism, Hanyang University, Haengdang-dong, Seongdonggu, Seoul, Republic of Korea