1. Epidemiologist, Epidemiology Unit, CPO Piemonte, AOU S. Giovanni Battista, Turin, Italy
2. Consultant, Cancer Registry, Veneto Region, Italy
3. Director NHS Cancer Screening Programmes, Sheffield, UK
4. Director, Clinical and Descriptive Epidemiology Unit, ISPO - Cancer Research and Prevention Institute, Florence, Italy the Euroscreen Working Group (members listed at the end of the paper)