1 University Hospital Leuven, Leuven Cancer Institute, Division of Gynecological Oncology, Department of Obstetrics and Gynecology, Leuven, Belgium European Union. Electronic address: Ignace.vergote@uzleuven.be.
2 Kliniken Essen Mitte, Department of Gynecology & Gynecologic Oncology, Essen, Germany.
3 University Hospital Leuven, Leuven Cancer Institute, Division of Gynecological Oncology, Department of Obstetrics and Gynecology, Leuven, Belgium European Union.