1. Technical University of Dresden, Germany
2. Aarhus University, Denmark
3. Leopold Franzens University, Innsbruck, Austria
4. University of Nebraska-Lincoln, Lincoln, NE, USA
5. CIS, ISCTE, IUL Lisbon University Institute, Lisbon, Portugal
6. University of Rostock, Germany
7. Claremont University, Claremont, CA, USA