1. Department of Public Health and Nursing Norwegian University of Science and Technology Trondheim Norway
2. Department of Gynecology St Olav’s Hospital, Trondheim University Hospital Trondheim Norway
3. Department of Physical Medicine and Rehabilitation Østfold Hospital Trust Sarpsborg Norway
4. Department of Surgery St Olav’s Hospital, Trondheim University Hospital Trondheim Norway
5. Croydon University Hospital Croydon UK
6. St George’s University of London London UK
7. Research Department St. Olav’s Hospital, Trondheim University Hospital Trondheim Norway