1. Argelander-Institut für Astronomie (AIfA), Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
2. Haystack Observatory, Massachusetts Institute of Technology, Westford, MA 01886, USA
3. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
4. National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
5. Instituto de Radioastronomía Milimétrica (IRAM), Avenida Divina Pastora, 7, 18012, Granada, Spain
6. Max-Planck-Institute for Extraterrestrial Physics (MPE), Giessenbachstr 1, D-85748 Garching, Germany
7. Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, allée Geoffroy Saint-Hilaire, F-33615 Pessac, France
8. Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Observatory, SE-439 92 Onsala, Sweden
9. Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA
10. Institut für Theoretische Astrophysik, Zentrum für Astronomie der Universität Heidelberg, Albert-Ueberle-Strasse 2, D-69120 Heidelberg, Germany
11. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
12. Institut de Radioastronomie Millimé, 300 rue de la Piscine, Domaine Universitaire, F-38406 Saint Martin d’Hè, France
13. Institute of Astronomy, The University of Tokyo, 2-21-1, Osawa, Mitaka, Tokyo 181-0015, Japan
14. National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan
15. Department of Physics and Astronomy, UCL, Gower St., London WC1E 6BT, UK
16. Materials Science and Engineering, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
17. Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK