1. Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland
2. Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 København N, Denmark
3. Leiden Observatory, Leiden University , PO Box 9500, NL-2300 RA Leiden, the Netherlands
4. Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama-Higashi, Hiroshima 739-8526, Japan
5. Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
6. National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, 169-8555, Tokyo, Japan
7. International Centre for Radio Astronomy Research, University of Western Australia , Stirling Hwy, Crawley 26, WA 6009, Australia
8. Nucleo de Astronomia Facultad de Ingenieria y Ciencias, Universidad Diego Portales , Av Ejercito 441, Santiago, Chile
9. Kapteyn Astronomical Institute, University of Groningen , PO Box 800, NL-9700 AV Groningen, the Netherlands
10. Waseda Research Institute for Science and Engineering, Faculty of Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
11. Departmento de Astronomia, Universidad de Chile , Casilla 36-D, Santiago 7591245, Chile
12. Centro de Astrofisica y Tecnologias Afines (CATA), Camino del Observatorio 1515 , Las Condes, Santiago 7591245, Chile
13. Dipartimento di Fisica, Sapienza, Universita di Roma , Piazzale Aldo Moro 5, I-00185 Roma, Italy
14. INAF/Osservatorio Astronomico di Roma , via Frascati 33, I-00078 Monte Porzio Catone, Roma, Italy
15. Sterrenkundig Observatorium, Ghent University , Krijgslaan 281-59, B-9000 Gent, Belgium
16. Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UK
17. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , PO Box 218, Hawthorn, VIC 3112, Australia
18. Departament d’Astronomia i Astrofisica, Universitat de Valencia , C. Dr Moliner 50, E-46100 Burjassot, Valencia, Spain
19. Unidad Asociada CSIC ‘Grupo de Astrofisica Extragalactica y Cosmologia’ (Instituto de Fisica de Cantabria – Universitat de Valencia) , 46980, Valencia, Spain
20. Steward Observatory, University of Arizona , 933 N Cherry Ave, Tucson, AZ 85721, USA