1. Cosmic Dawn Center (DAWN)
2. Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 Copenhagen N , Denmark
3. Institute of Theoretical Physics (ITP), Heidelberg University , Philosophenweg 16, D-69120 Heidelberg , Germany
4. Kapteyn Astronomical Institute, University of Groningen , P.O. Box 800, 9700 AV Groningen , The Netherlands
5. Leibniz-Institut für Astrophysik , An der Sternwarte 16, D-14482 Potsdam , Germany
6. Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa , Italy
7. Departamento de Fisica Teorica , Modulo 8, Facultad de Ciencias, Universidad Autonoma de Madrid, E-28049 Madrid , Spain
8. CIAFF, Facultad de Ciencias, Universidad Autonoma de Madrid , E-28049 Madrid , Spain