1. University of Muenster, Muenster, Germany, , Cass Business School, City University, London, UK
2. Northwestern University, Evanston, IL, USA
3. LichtBlick AG, Hamburg, Germany
4. University of Groningen, Groningen, The Netherlands
5. University of Cologne, Cologne, Germany
6. Penn State University, University Park, PA, USA
7. Goethe-University of Frankfurt, Frankfurt/Main, Germany