1. Institut Curie, Centre National de la Recherche Scientifique Unité Mixte de Recherche 144, 75248 Paris, Cedex 05, France
2. Wadsworth Center, New York State Department of Health, Albany, NY 12201
3. Adolf-Butenandt-Institute, Cell Biology, Ludwig Maximilian University of Munich, 80336 Munich, Germany
4. Hybrigenics, 75014 Paris, France