1. ICN Business School, CEREFIGE - Université de Lorraine, Nancy, France
2. Université Libre de Bruxelles (U.L.B.), Brussels, Belgium
3. Université catholique de Louvain (UCLouvain), Louvain-la-Neuve, Belgium
4. Department of Management, The Wharton School, University of Pennsylvania, Philadelpia, PA, USA