1. Documentation & Quality, The Danish Cancer Society, Copenhagen, Denmark.
2. University Hospital Zealand and The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
3. Department of Clinical Medicine, Center for Sexology Research, Aalborg University, Aalborg, Denmark.
4. Danish Cancer Society Research Center, The Danish Cancer Society, Copenhagen, Denmark.
5. The Research Unit for General Practice, Aarhus University, Aarhus, Denmark.
6. Pediatrics and Adolescent Medicine, University Hospital Rigshospitalet, Copenhagen, Denmark.
7. Center of Adolescent Medicine, University Hospital Rigshospitalet, Copenhagen, Denmark.
8. Department of Oncology, Aarhus University Hospital, Aarhus, Denmark.