1. Department of Gynecologic Oncology and Reproductive Sciences; The University of Texas MD Anderson Cancer Center; Houston Texas
2. Gynecologic Oncology Group Statistical and Data Center; Roswell Park Cancer Institute; Buffalo New York
3. Department of Gynecologic Oncology; Northwestern University Feinberg School of Medicine; Chicago Illinois
4. University of North Carolina School of Medicine; Chapel Hill North Carolina
5. Department of Surgery; Memorial Sloan-Kettering Cancer Center; New York New York
6. Department of Obstetrics/Gynecology; NorthShore University Health System; Lake Forest Illinois
7. Department of Gynecologic Oncology; University of Iowa Hospitals and Clinics; Iowa City Iowa