1. BGOG & University Hospital Leuven, Leuven, Belgium;
2. AGO Study Group & University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany;
3. GINECO & Institut Bergonié, Bordeaux, France;
4. AGO Study Group & Coordinating Center for Clinical Trials Philipps-University of Marburg, Marburg, Germany;
5. KGOG and Seoul National University, Seoul, Korea South;
6. Hospital Miguel Servet, Zaragoza, Spain;
7. ANZGOG & Prince of Wales Hospital, Sydney, Australia;
8. MITO & Istituto Nazionale Tumori “Fondazione G.Pascale”- IRCCS, Naples, Italy;
9. JGOG & Saitama Medical University International Medical Center, Hidaka, Japan;
10. MaNGO & European Institute of Oncology and University of Milan-Bicocca, Milano, Italy;
11. NSGO and Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark;
12. Californian Consortium & University of Arizona Cancer Center at Dignity Health St. Joseph's Hospital and Medical Center, Phoenix, AZ;
13. AGO Austria & Klinikum Klagenfurt am Wörthersee, Klagenfurt, Austria;
14. ICORG & University Hospital Waterford, Waterford, Ireland;
15. NYGOG & University of Cincinnati, University of Cincinnati Cancer Institute, Cincinnati, OH;
16. AGO Study Group & Sana Klinikum Offenbach GmbH, Offenbach, Germany;
17. GINECO & Centre Hospitalier Régional d'Orléans, Orleans, France;
18. KGOG and Yonsei University College of Medicine, Institute of Women’s Life Medical Science, Seoul, Korea, Republic of (South);
19. AGO Study Group & Ernst Moritz Arndt Universität Greifswald, Greifswald, Germany;
20. AGO Study Group & Kliniken Essen Mitte, Essen, Germany;