1. Institute of Diagnostic Virology, Friedrich Loeffler Institute, Greifswald-Insel Riems, Germany
2. European Union Reference Laboratory for Avian Influenza and Newcastle Disease, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
3. Animal and Plant Health Agency—Weybridge, New Haw, Addlestone, Surrey, United Kingdom
4. OIE/FAO International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease, Animal and Plant Health Agency—Weybridge, Addlestone, Surrey, United Kingdom
5. Wageningen Bioveterinary Research, Lelystad, The Netherlands
6. Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
7. Department of Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, United Kingdom
8. Department for Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen, Denmark
9. Department of Microbiology, National Veterinary Institute, SVA, Uppsala, Sweden
10. Department of Pathology, National Veterinary Institute, SVA, Uppsala, Sweden
11. State Veterinary Institute Prague, Prague, Czech Republic
12. Croatian Veterinary Institute, Poultry Centre, Zagreb, Croatia
13. Service of Avian Virology and Immunology, Sciensano, Brussels, Belgium
14. Agence Nationale de Sécurité Sanitaire, de l’Alimentation, de l’Environnement et du Travail, Laboratoire de Ploufragan-Plouzané-Niort, Unité de Virologie, Immunologie, Parasitologie Avaires et Cunicoles, Ploufragan, France
15. Department of Poultry Diseases, National Veterinary Research Institute, Puławy, Poland