1. Lawrence Berkeley National Lab. (United States)
2. Yale Univ. (United States)
3. Univ. of California, Berkeley (United States)
4. Institut de Ciències de l'Espai (Spain)
5. National Optical Astronomy Observatory (United States)
6. Fermi National Accelerator Lab. (United States)
7. The Ohio State Univ. (United States)
8. Univ. of Michigan (United States)
9. SLAC National Accelerator Lab. (United States)
10. Institut d'Estudis Espaciales de Catalunya (Spain)