1. Department of Technology and Operations, Ross School of Business, University of Michigan, Ann Arbor, Michigan 48109;
2. Department of Supply Chain Management, College of Business Administration, Capital University of Economics and Business, 100070 Beijing, China;
3. Department of Operations Management, Desautels Faculty of Management, McGill University, Montreal, Quebec H3A 1G5, Canada;
4. Department of Operations & Decision Technologies, Kelley School of Business, Indiana University, Bloomington, Indiana 47405