1. Department of Management and Marketing, Faculty of Business, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
2. Department of Information Systems, Business Statistics and Operations Management, School of Business and Management, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
3. Department of Information Systems, Sam M. Walton College of Business, University of Arkansas, Fayetteville, Arkansas 72701