1. Epidemiologist, Romagna Cancer Registry, IRST, Forlì, Italy
2. Statistician, Romagna Cancer Registry, IRST, Forlì, Italy
3. Computer Programmer, Romagna Cancer Registry, IRST, Forlì, Italy
4. Oncologist, Romagna Cancer Registry, IRST, Forlì, Italy
5. Department of Health, Emilia-Romagna Region, Bologna, Italy