1. Department of General Surgery Academic Hospital of Trieste Trieste Italy
2. Breast Unit Academic Hospital of Trieste Trieste Italy
3. Biostatistics Unit Department of Medicine, Surgery and Health Sciences University of Trieste Trieste Italy
4. Unit of Biostatistics, Epidemiology and Public Health University of Padua Trieste Italy
5. Laboratory Medicine Unit of Pathology Academic Hospital of Trieste Trieste Italy