1 Department of Surgery and Cancer, Gynecologic Oncology, Hammersmith Hospital Imperial College London, London, UK; Department of Gynecology, Charité Medical University of Berlin, Berlin; North-Eastern German Society of Gynaecologic Oncology (NOGGO) Ovarian Cancer Study Group, Taufkirchen, Germany; Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) Study Group, Taufkirchen, Germany. Electronic address: c.fotopoulou@imperial.ac.uk.
2 Department of Gynecology, Charité Medical University of Berlin, Berlin; North-Eastern German Society of Gynaecologic Oncology (NOGGO) Ovarian Cancer Study Group, Taufkirchen, Germany; Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) Study Group, Taufkirchen, Germany.
3 Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) Study Group, Taufkirchen, Germany; Department of Obstetrics and Gynecology, Ludwig-Maximilians-University Munich, München, Germany.
4 Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) Study Group, Taufkirchen, Germany; Department of Gynecology, Kliniken Essen Mitte, Essen, Germany.
5 University Hospitals Leuven, Leuven, Belgium; BGOG, Leuven, Belgium.
6 Department of Medical Oncology, Clínica Universidad de Navarra, Madrid, Spain; GEICO Study Group, Madrid, Spain.
7 GEICO Study Group, Madrid, Spain; Department of Obstetrics and Gynecology, Clínica Universidad de Navarra, Madrid, Spain.