1. Department of Health and Welfare Østfold University College Fredrikstad Norway
2. Department of Physical Medicine and Rehabilitation Østfold Hospital Trust Sarpsborg Norway
3. Department of Nursing and Health Promotion Oslo Metropolitan University Oslo Norway
4. Department of Obstetrics and Gynecology Østfold Hospital Trust Sarpsborg Norway
5. Department of Obstetrics and Gynecology St. Olav’s HospitalTrondheim University Hospital Trondheim Norway
6. Department of Clinical and Molecular Medicine Norwegian University of Science and Technology Trondheim Norway
7. Department of Public Health and Nursing Norwegian University of Science and Technology Trondheim Norway
8. Department of Clinical Services St. Olav’s HospitalTrondheim University Hospital Trondheim Norway