1. Department of Viroscience, Erasmus MC, Rotterdam, the Netherlands
2. Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK
3. Staatsbosbeheer, Amersfoort, the Netherlands
4. Avian Influenza Research and Diagnostic Division, Animal and Plant Quarantine Agency, Republic of Korea
5. Avian Virology and Immunology, Sciensano, Brussels, Belgium
6. Veterinary Diagnostics Directorate, Budapest, Hungary
7. Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Insel Riems, Germany
8. Croatian Veterinary Institute, Zagreb, Croatia
9. OIE/FAO/EURL International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease, Animal and Plant Health Agency (APHA)—Weybridge, Addlestone, Surrey, UK
10. Department of Pathobiology and Population Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, UK