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 Otorhinolaryngology, Head and Neck Surgery and Audiology, RigshospitaletUniversity of Copenhagen Copenhagen Denmark
4. Department of Public HealthUniversity of Copenhagen Copenhagen Denmark
5. Department of Gynecology, RigshospitaletUniversity of Copenhagen Copenhagen Denmark