1. Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester , Oxford Road, Manchester M13 9PL, UK
2. Department of Astronomy, Tsinghua University , Beijing 100084, China
3. Thüringer Landessternwarte , Sternwarte 5, 07778 Tautenburg, Germany
4. School of Physics and Astronomy, Sun Yat-sen University , 2 Daxue Road , Zhuhai 519082, China
5. Minnesota Institute for Astrophysics, University of Minnesota , 116 Church St, SE , Minneapolis, MN 55455, USA
6. The Alan Turing Institute , Euston Road , London NW1 2DB, UK
7. ASTRON, the Netherlands Institute for Radio Astronomy , Oude Hoogeveesedijk 4, 7991 PD Dwingeloo, the Netherlands
8. Kapteyn Astronomical Institute, University of Groningen , PO Box 800, 9700 AV Groningen, the Netherlands
9. CSIRO Space and Astronomy, ATNF , PO Box 1130, Bentley WA 6102, Australia
10. Centre for Astrophysics Research, University of Hertfordshire , College Lane, Hatfield AL10 9AB, UK
11. Australian Astronomical Optics, Macquarie University , 105 Delhi Rd , North Ryde, NSW 2113, Australia
12. Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México , Antigua Carretera a Pátzcuaro # 8701 , Ex-Hda. San José de la Huerta, Morelia, Michoacán, C.P. 58089, México
13. Department of Physics and Astronomy, University of Calgary , Calgary, Canada
14. School of Science, Western Sydney University , Locked Bag 1797, Penrith, NSW 2751, Australia
15. CSIRO Space and Astronomy , PO Box 76, Epping, NSW 1710, Australia
16. Institute of Space Science and Technology, University of Karachi , Pakistan
17. School of Mathematics and Physics, University of Queensland , St Lucia, Brisbane, QLD 4072, Australia
18. School of Natural Sciences, University of Tasmania , Private Bag 37, Hobart, TAS 7001, Australia
19. ICRAR-M468, The University of Western Australia , 35 Stirling Hwy , Crawley, WA 6009, Australia
20. ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia