1. Institute of Medical Biometry and Informatics; University of Heidelberg; Heidelberg Germany
2. Division of Molecular Genetic Epidemiology; German Cancer Research Centre (DKFZ); Heidelberg Germany
3. Finnish Cancer Registry; Institute for Statistical and Epidemiological Cancer Research; Helsinki Finland
4. School of Health Sciences; University of Tampere; Tampere Finland
5. The Norwegian Cancer Registry; Oslo Norway
6. Centre for Primary Health Care Research; Lund University; Malmö Sweden
7. Stanford Prevention Research Center; Stanford University School of Medicine; Stanford CA USA