1. Department of Obstetrics and Gynecology, University Hospital of Tuebingen
2. Department of Obstetrics and Gynecology, Charles University Prague and General University Hospital Prague
3. Department of Radiology, First Faculty of Medicine, Charles University Prague
4. Department of General Surgery, Assuta medical centers, Haifa
5. Department of Obstetrics and Gynecology, University Hospital of Heidelberg