The Cancer Epidemiology Research Programme (PREC) at ICO is devoted to research on the causes, epidemiology, early diagnosis and prevention of cancer. PREC provides advice on the design, development and assessment of cancer prevention strategies, such as providing assessments of population-based cancer screening programmes, and providing estimates of costeffectiveness of health promotion programming and cancer prevention measures. With demonstrated expertise in the areas of laboratory, clinical and population-based methods, PREC has become internationally recognised for conducting high quality research, while its scientists have made cutting-edge discoveries and noteworthy contributions to the field of cancer epidemiology. PREC is composed of two units: Infections and Cancer and Nutrition and Cancer.