1. Univ. of California, San Diego (United States)
2. Cardiff Univ. (United Kingdom)
3. The Graduate Univ. for Advanced Studies (Japan)
4. Univ. of Wisconsin-Madison (United States)
5. Scuola Internazionale Superiore di Studi Avanzati (Italy)
6. Univ. of California, Berkeley (United States)
7. Argonne National Lab. (United States)
8. Pontificia Univ. Católica de Chile (Chile)
9. Lawrence Berkeley National Lab. (United States)
10. Dalhousie Univ. (Canada)
11. McGill Univ. (Canada)
12. Imperial College London (United Kingdom)
13. Institut Lagrange de Paris (France)
14. Univ. of California, Irvine (United States)
15. The Univ. of Tokyo (Japan)
16. Univ. of Colorado at Boulder (United States)
17. High Energy Accelerator Research Organization, KEK (Japan)
18. Kavli Institute for the Physics and Mathematics of the Universe (Japan)
19. Princeton Univ. (United States)
20. AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS (France)
21. Japan Aerospace Exploration Agency (Japan)
22. NASA Goddard Space Flight Ctr. (United States)
23. Univ. of Sussex (United Kingdom)
24. The Univ. of Melbourne (Australia)
25. National Institute for Fusion Science (Japan)