1. Department of Gynaecology, Obstetrics and Gynaecological Oncology, Pius-Hospital, Oldenburg
2. Division of Gynaecological Surgery, Department of Obstetrics and Gynaecology, University of Tübingen, Tübingen
3. Department of Obstetrics and Gynaecology, University of Heidelberg, Heidelberg
4. Department of General and Visceral Surgery, Pius-Hospital, Oldenburg
5. Clinic for Minimal Invasive Surgery, Berlin-Zehlendorf
6. Queensland Centre for Gynaecological Cancer, Royal Brisbane and Women's Hospital, Herston, Queensland, Austria