1. Gothenburg Continence Research Center Institute of Clinical SciencesSahlgrenska Academy at Gothenburg University Gothenburg Sweden
2. Department of Obstetrics and Gynecology Södra Älvsborgs Hospital Borås Sweden
3. Department of Obstetrics and Gynecology Akershus University Hospital, and Faculty of MedicineUniversity of Oslo Oslo Norway
4. Department of Obstetrics and Gynecology Medical University of Vienna Vienna Austria
5. Department of Obstetrics and Gynecology University of Alberta Edmonton Alberta Canada
6. Department of Medicine University of Alberta Edmonton Alberta Canada
7. Department of Obstetrics and Gynecology Sahlgrenska University Hospital Gothenburg Sweden