1. Cancer Registry Unit, Fondazione IRCCS, Istituto Nazionale dei Tumori, 20133 Milan, Italy
2. Environmental Epidemiology Unit, Fondazione IRCCS, Istituto Nazionale dei Tumori, 20133 Milan, Italy
3. Department of Medicine and Surgery, University of Parma, Medical Oncology, Cancer Registry, University Hospital of Parma, 43100 Parma, Italy
4. Epidemiology Unit, Health Protection Agency of Pavia (ATS Pavia), 27100 Pavia, Italy
5. Ragusa Cancer Registry, Department of Prevention, Ragusa Health Authority, 97100 Ragusa, Italy
6. Cancer Registry, Aosta Valley Health Authorities Department of Public Health, 11100 Aosta, Italy