1. Sanofi-Synthelabo Recherche, Department of Toxicology, 2-8 rue de Rouen, 78440 Porcheville, France, olivier.dorchies@sano fi-synthelabo.com
2. Institut Curie-Recherche, Centre Universitaire, 91405 Orsay Cedex, France
3. Sanofi-Synthelabo Recherche, Department of Toxicology, 2-8 rue de Rouen, 78440 Porcheville, France