1. D’Amore-McKim School of Business, Northeastern University, Boston, Massachusetts 02115-5000;
2. Wharton School, Management, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6370;
3. Rotman School of Management, University of Toronto, Toronto, Ontario M5S 3E6, Canada;
4. Carlson School of Management, University of Minnesota, Minneapolis, Minnesota 55455