1. School of Tourism Development, Maejo University, 63 Moo 4 Nong Han, Sansai, Chiang Mai, 50290, Thailand
2. Department of Applied Economics, University of the Balearic Islands, Ctra Valldemossa km 7.5, 07122 Palma de Mallorca, Spain
3. Public Policy Studies Institute, Chiang Mai University, Thailand
4. Department of Applied Economics, University of the Balearic Islands, Palma de Mallorca, Spain