1. Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Yangsan, Korea.
2. Center for Gynecologic Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
3. Division of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, Korea.
4. Division of Health Administration, Yonsei University, Wonju, Korea.
5. Department of Cancer Control and Population Health, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Korea.
6. Center for Clinical Trials, Hospital and Division of Tumor Immunology, Research Institute, National Cancer Center, Goyang, Korea.