1. Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
2. Vetworks BV, Knokstraat 36, 9880 Aalter, Belgium
3. ITAVI, Institut Technique de l’Aviculture, Pisciculture et Cuniculture, 75009 Paris, France
4. ZLTO, 5223 DE s’-Hertogenbosch, The Netherlands
5. Poultry Health Centre of Catalonia and Aragon (CESAC), 43206 Reus, Spain
6. Centro de Calidad Avícola y Alimentación Animal de la Comunidad Valenciana (CECAV), 12539 Castellón, Spain
7. Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell’Università 16, 35020 Legnaro, Italy
8. Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
9. Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine, H-1078 Budapest, Hungary
10. Poultry-Care Kft., H-5052 Újszász, Hungary
11. Department of Animal Husbandry Technology and Welfare, Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary