1. Department of Obstetrics and Gynecology, Stavanger University Hospital, 4068 Stavanger, Norway
2. Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
3. Department of Research, Stavanger University Hospital, 4068 Stavanger, Norway
4. Centre of Molecular Inflammation Research (CEMIR), Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
5. Department of Gynecology and Obstetrics, St. Olavs Hospital, Trondheim University Hospital, 7006 Trondheim, Norway
6. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, 7491 Trondheim, Norway
7. K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
8. Department of Obstetrics and Gynecology, Haukeland University Hospital, 5021 Bergen, Norway
9. Department of Clinical Science, University of Bergen, 5020 Bergen, Norway