1. School of Tourism and Urban-rural Planning, Zhejiang Gongshang University, Hangzhou, P.R. China
2. School of Hospitality Management, The Pennsylvania State University, State College, PA, USA
3. School of Economics & Management, Shanghai Maritime University, Shanghai, P.R. China
4. School of Management, Chongqing University of Technology, Chongqing, P.R. China
5. School of Management, Zhejiang University of Finance & Economics, Hangzhou, P.R. China