1. Federal Institute for Health Protection of Consumers and Veterinary Medicine (BgVV), Berlin, Germany
2. ZEBET, BgVV, Berlin, Germany
3. St George's Hospital Medical School, University of London, UK
4. National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands
5. Syngenta CTL, Macclesfield, UK
6. Novartis Pharma AG
7. National Public Health Institute (KTL Finland), Kuopio, Finland
8. Synthelabo Recherche, Gargenville, France
9. ECVAM, JRC Institute for Health and Consumer Protection, Ispra (VA), Italy
10. Schering AG, Berlin, Germany