1 Division of Gynaecological Oncology, Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.
2 Department of Gynecologic Oncology, Sun Yat-sen University Cancer Centre, Guangzhou, China.
3 Department of Obstetrics & Gynecology. Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
4 Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS) National University Hospital (NUH) Singapore, Singapore, Singapore.