1. Institut für Medizinische Informatik, Biometrie und Epidemiologie Universitätsklinikum Essen Essen Germany
2. Department of Epidemiology School of Public Health Boston University Boston Massachusetts USA
3. Cancer Registry of North Rhine‐Westphalia Bochum Germany
4. Department of Obstetrics and Gynecology University of Utah Salt Lake City Utah USA
5. Huntsman Cancer Institute at the University of Utah Salt Lake City Utah USA
6. Department of Pathology Josephine Nefkens Institute Rotterdam The Netherlands
7. Division of Cancer Epidemiology and Genetics, National Cancer Institute National Institutes of Health Rockville Maryland USA