1. Research Unit of Gynecology and Obstetrics; Department of Gynecology and Obstetrics; Institute of Clinical Research; University of Southern Denmark; Odense University Hospital; Odense Denmark
2. Institute of Public Health; University of Southern Denmark; Odense Denmark
3. Centre for Innovative Medical Technology; Odense University Hospital; Odense Denmark
4. Division of Surgery; Northwick Park Institute for Medical Research; University College London; London UK