1. Institut für Toxikologie, Christian-Albrechts Universität, Weimarer Str. 8 Haus 3, 24106 Kiel, Germany
2. ECVAM, JRC Environment Institute, 21020 Ispra (Va), Italy
3. Department of Biology, University of Padova, via Trieste 75, 35121 Padova, Italy
4. Department of Human Morphology, University of Nottingham Medical School, Nottingham NG7 2UH, UK
5. Division of Toxicology, Institute of Hygiene and Epidemiology, J. Wytsmanstraat 14, 1050 Brussels, Belgium
6. Department of Pharmaceutical Biosciences, Division of Toxicology, Uppsala University, 75124 Uppsala, Sweden
7. Unidad de Hepatologia Experimental, Centro de Investigacion, Hospital Universitario La Fe, Avda de Campanar 21, 46009 Valencia, Spain
8. ZEBET, Bundesinstitut für gesundheitlichen Verbraucherschutz und Veterinärmedizin (BgVV), Diedersdorfer Weg 1, 12277 Berlin, Germany
9. Institute of Toxicology, Danish National Food Agency, 19 Morkhøj Bygade, 2860 Søborg, Denmark
10. Central Department of Product Safety, Recherche Avancée, L'Oréal, 93601 Aulnay-sous-Bois, France
11. VITRO-BIO, Biopôle, Clermont-Limagne, 63360 Saint Beauzire, France
12. Pharmacia AB, Biopharmaceuticals, 112 87 Stockholm, Sweden