1. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, NC
2. Department of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health care Hospital, Beijing, P. R. China
3. Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke University, Durham, NC
4. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, NC