1. Carlson School of Management, University of Minnesota, Minneapolis, Minnesota 55455;
2. Harvard Business School, Harvard University, Boston, Massachusetts 02163;
3. Operations Management, Quantitative Methods and Information Systems Area, Indian Institute of Management Udaipur, Balicha, Udaipur, Rajasthan 313001, India;
4. Robert H. Smith School of Business, University of Maryland, College Park, Maryland 20742;
5. Unaffiliated