1. Michael Smurfit Graduate School of Business, University College Dublin, A94 XF34 Dublin, Ireland;
2. College of Public Health and Human Sciences, Oregon State University, Corvallis, Oregon 97331;
3. Fisher College of Business, The Ohio State University, Columbus, Ohio 43210;
4. Esade Business School, Universitat Ramon Llull, 08172 St. Cugat, Spain