1. Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany
2. Excellence Cluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany
3. INAF – Osservatorio Astronomico di Trieste via G.B. Tiepolo 11, I-34143 Trieste, Italy
4. Max Planck Institute for Extraterrestrial Physics, Giessenbachstr., D-85748 Garching, Germany
5. Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
6. Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA
7. Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
8. Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
9. Fermi National Accelerator Laboratory, Batavia, IL 60510-0500, USA
10. Department of Physics, University of Chicago, Chicago, IL 60637, USA
11. Department of Physics and Astronomy, University of Missouri, 5110 Rockhill Road, Kansas City, MO 64110, USA
12. Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA
13. Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan
14. Department of Physics, University of California, Berkeley, CA 94720, USA
15. Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
16. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305-4085, USA
17. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA
18. Department of Physics, Université de Montréal, Montrea, Quebec H3T 1J4, Canada
19. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA
20. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
21. Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USA
22. NASA Ames Research Center, Moffett Field, CA 94035, USA
23. School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
24. Department of Astronomy, University of Michigan, 1085 S. University Ave, Ann Arbor, MI 48109, USA
25. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
26. Department of Physics, University of California, Davis, CA 95616, USA
27. Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA
28. Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile