1. Unit of Medical Genetics Department of Medical and Surgical Sciences; University of Bologna; Bologna Italy
2. Genomic Epidemiology Group; German Cancer Research Center (DKFZ); Heidelberg Germany
3. INSERM U945 Faculté de Médecine Pitié-Salpêtrière; Paris France
4. Health Sciences and Technologies Interdepartmental Center for Industrial Research; University of Bologna; Bologna Italy
5. Department of Biostatistics; Pharnext; Paris France
6. Genetic Cancer Susceptibility, International Agency for Research on Cancer (IARC), Lyon; France
7. INSERM, U900, Institut Curie, Mines ParisTech, 26 rue d'Ulm, 75248 Paris cedex 05; France