1. Department of Gynaecology, Sorlandet Hospital HF, Kristiansand, Norway.
2. Department of Gynaecology, Rikshospitalet-Radiumhospitalet Medical Center, University of Oslo, Oslo, Norway.
3. The Cancer Clinic, Department of Oncology, Rikshospitalet-Radiumhospitalet Medical Center, University of Oslo, Oslo, Norway.
4. Research Centre for Health Promotion, Faculty of Psychology, University of Bergen, Bergen, Norway.
5. Norwegian Institute of Public Health, Division of Mental Health, Oslo, Norway.
6. The Cancer Clinic, Department of Clinical Cancer Research, Rikshospitalet-Radiumhospitalet Medical Center, University of Oslo, Oslo, Norway.