1. Netherlands Vaccine Institute, Bilthoven, The Netherlands
2. Sanofi Pasteur, Marcy l'Étoile, France
3. European Directorate for the Quality of Medicines, Council of Europe, Strasbourg, France
4. European Centre for the Validation of Alternative Methods (ECVAM), Institute for Health and Consumer Protection, European Commission Joint Research Centre, Ispra (VA), Italy
5. Leiden/Amsterdam Center for Drug Research, Leiden University, Leiden, The Netherlands
6. GlaxoSmithKline Biologicals, Rixensart, Belgium
7. Statens Serum Institut, Copenhagen, Denmark
8. Serum Institute of India Ltd, Pune, India
9. Intervet UK Ltd, Milton Keynes, UK
10. Paul-Ehrlich-Institute, Langen, Germany
11. Center for Biologics Evaluation and Research, Food and Drug Administration, Rockville, MD, USA
12. Netherlands Centre Alternatives to Animal Use, Utrecht University, Utrecht, The Netherlands