1. Institut für Viruskrankheiten und Immunprophylaxe, 3147 Mittelhäusern, Switzerland
2. ID-DLO, P.O. Box 65, Edelhertweg 15, 8200 AB Lelystad, The Netherlands
3. European Pharmacopoeia, Council of Europe, 226, avenue de Colmar, P.O. Box 907, 67029 Strasbourg 01, France
4. Lohmann Animal Health GmbH, Heinz-Lohmann-Strasse 4, 27472 Cuxhaven, Germany
5. Laboratoire Central de Recherches Avicole et Porcine, Agence Francaise de Securite Sanitaire des Aliment, BP 53, Zoopole, 22440 Ploufragan, France
6. ECVAM, JRC Institute for Health & Consumer Protection, European Commission, 21020 Ispra (VA), Italy
7. Paul Ehrlich Institute, Paul-Ehrlich-Strasse 51–59, 63225 Langen, Germany
8. Merial S.A.S., 29 Avenue Tony Garnier, P.O. Box 7123, 69348 Lyon 07, France
9. Laboratorio di Medicina Veterinaria, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Roma, Italy
10. Viral Oncogenesis Group, Institute for Animal Health, Compton, Berkshire RG20 7NN, UK
11. Fort Dodge Animal Health, C.J. van Houtenlaan 36, 1381 CP Weesp, The Netherlands
12. Intervet International B.V., Wim de Korverstraat 35, 5831 AN Boxmeer, The Netherlands