1. Department of Industrial and Operations Engineering, University of Michigan, Ann Arbor, Michigan 48109
2. Department of Systems Engineering and Engineering Management, Faculty of Engineering, Chinese University of Hong Kong, Shatin, N.T., Hong Kong; and Department of Decision Sciences and Managerial Economics, CUHK Business School, Chinese University of Hong Kong, Shatin, N.T., Hong Kong
3. Research Institute for Interdisciplinary Sciences, School of Information Management and Engineering, Shanghai University of Finance and Economics, 200433 Shanghai, China
4. Harold and Inge Marcus Department of Industrial and Manufacturing Engineering, Pennsylvania State University, University Park, Pennsylvania 16802
5. Department of Decision Sciences and Managerial Economics, CUHK Business School, Chinese University of Hong Kong, Shatin, N.T., Hong Kong