1. Department of Medical Education, Lincoln County Hospital, Lincoln, UK
2. Department of Gynaecology and Obstetrics, Odense University Hospital, Odense, Denmark
3. Institute of Clinical Research, Research Unit of Gynaecology and Obstetrics, University of Southern Denmark, Odense, Denmark
4. Centre for Innovative Medical Technology, Odense University Hospital, Odense, Denmark
5. Division of Surgery, University College London, Northwick Park Institute for Medical Research Campus, London, UK