1. Department of Operations and Decision Technologies, Kelley School of Business, Indiana University, Bloomington, Indiana 47405;
2. Department of Information and Decision Sciences, Carlson School of Management, University of Minnesota, Minneapolis, Minnesota 55455;
3. Department of Management, Economics, and Social Sciences, University of Cologne, 50923 Cologne, Germany;
4. Department of Technology and Operations Management, Rotterdam School of Management, Erasmus University Rotterdam, 3062 PA Rotterdam, Netherlands