1. Unit of Virus, Lifestyle and GenesDanish Cancer Society Research Center Copenhagen Denmark
2. Unit of Statistics and PharmacoepidemiologyDanish Cancer Society Research Center Copenhagen Denmark
3. Department of PathologyHvidovre Hospital Hvidovre Denmark
4. Department of Medical VirologyUniversity Hospital Tübingen Tübingen Germany
5. Department of GynecologyRigshospitalet, University of Copenhagen Copenhagen Denmark