1. Department of Preventive and Predictive Medicine, Analytical Epidemiology Unit, Fondazione IRCSS Istituto Nazionale dei Tumori, Milan
2. Modena Cancer Registry and Department of Oncology and Hematology, University of Modena and Reggio Emilia, Modena
3. National Center for Epidemiology, Surveillance and Health Promotion, Department of Cancer Epidemiology, Istituto Superiore di Sanità, Rome
4. Epidemiology Unit, Local Health Unit 1, Sassari
5. Trapani Cancer Registry, Erice (Trapani)
6. Romagna Cancer Registry, IRST, Meldola (Forlì)
7. Campania Cancer Registry, Local Health Unit 4, Brusciano (Naples)
8. Piedmont Cancer Registry, Province of Biella, Epidemiology Unit, Local Health Unit, Biella
9. Department of Surgical and Medical Specialities and Public Health, University of Perugia, Perugia
10. Palermo Breast Cancer Registry and Experimental Oncology, Department of Oncology, ARNAS Civic Hospital, Palermo
11. Cancer Registry and Histopathology Unit, MP Arezzo Hospital, Ragusa, Italy