1. Astronomy Centre; University of Sussex; Falmer; Brighton; BN1 9QH
2. Institute for Computational Cosmology; Department of Physics; Durham University; South Road; Durham; DH1 3LE
3. Astrophysics Research Institute; Liverpool John Moores University; Twelve Quays House, Egerton Wharf; Birkenhead; CH41 1LD
4. Centre for Astronomy and Particle Theory; University of Nottingham; University Park; Nottingham; NG7 2RD
5. Australian Astronomical Observatory; PO Box 296; Epping; NSW; 1710; Australia
6. European Southern Observatory; Karl-Schwarzschild-Str. 2; 85748; Garching; Germany
7. Institute for Astronomy; University of Edinburgh; Royal Observatory; Blackford Hill; Edinburgh; EH9 3HJ
8. Sydney Institute for Astronomy; School of Physics; University of Sydney; NSW; 2006; Australia
9. Department of Physics; Swiss Federal Institute of Technology (ETH-Zürich); 8093; Zürich; Switzerland
10. School of Physics; Monash University; Clayton; Victoria; 3800; Australia
11. Leiden University; PO Box 9500; 2300; RA Leiden; the Netherlands
12. Institute of Cosmology and Gravitation (ICG); University of Portsmouth; Dennis Sciama Building, Burnaby Road; Portsmouth; PO1 3FX
13. Jeremiah Horrocks Institute; University of Central Lancashire; Preston; PR1 2HE
14. Research School of Astronomy & Astrophysics; Mount Stromlo Observatory; Weston Creek; ACT; 2611; Australia
15. Astronomy Unit; Queen Mary University London; Mile End Rd; London; E1 4NS
16. School of Physics; University of Melbourne; Victoria; 3010; Australia
17. Max Planck Institute for Nuclear Physics (MPIK); Saupfercheckweg 1; 69117; Heidelberg; Germany