1. Centre National de la Recherche ScientifiqueUPR420 Villejuif F‐94801 France
2. Assistance Publique‐Hôpitaux de ParisService de Néphrologie BHôpital Tenon F‐75020 France
3. Laboratoire d'Anatomopathologie et INSERM U430Hôpital Broussais Paris F‐75014 France
4. Unité d'Oncologie ViraleInstitut Pasteur Paris cedex 15 F‐75724 France
5. McMaster University Medical Centre Hamilton Hamilton Ontario L8N 3Z5 Canada
6. Department of BiochemistryMcMaster University Hamilton Ontario L8N 3Z5 Canada
7. The Amgen Institute and Ontario Cancer InstituteDepartment of Medical Biophysics and ImmunologyUniversity of Toronto Toronto Ontario M5G 2C1 Canada