1. Department of Biology, University of Pennsylvania, Philadelphia, PA, USA
2. Centre for Cultural Evolution, Stockholm University, Stockholm, Sweden
3. Division of Applied Mathematics, Mälardalen University, Västerås, Sweden
4. Department of Ecology and Evolution, University of Lausanne, Biophore, Lausanne, Switzerland
5. Philosophy and Ethics, Eindhoven University of Technology, Eindhoven, The Netherlands
6. Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
7. Netherlands Institute for Advanced Study, Amsterdam, The Netherlands
8. Institute for Theoretical Biology, Humboldt University, Berlin, Germany
9. Centre for Ecology and Conservation, University of Exeter, Penryn, UK
10. Department of Zoology, Stockholm University, Stockholm, Sweden