1. Laboratoire Cerba95066 Cergy Pontoise Cedex 9 France
2. Center for Cancer Epidemiology and Prevention (CPO)Città della Salute e della Scienza. Via San Francesco da Paola 3110123Torino Italy
3. Department of Applied Tumor BiologyInstitute of PathologyUniversity of Heidelberg and German Cancer Research CenterIm Neuenheimer Feld 22469120Heidelberg Germany
4. Division of Cancer Epidemiology and GeneticsNational Cancer InstituteRockville MD
5. Unit of Cancer EpidemiologyScientific Institute of Public Health Brussels Belgium
6. Department of PathologyUniversity of Virginia Health SystemCharlottesville VA