1. University of Colorado, Boulder, Leeds School of Business, 419 UCB, Boulder, CO 80309, USA and visiting professor at Ghent University.
2. Nanyang Technological University, Nanyang Business School, 50 Nanyang Avenue, Singapore 639798, Singapore.
3. Oregon State University, College of Business, 200 Bexell Hall, Corvallis, OR 97331, USA.