1. Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA 19104.
2. Department of Surgery, University of Pennsylvania Medical Center, Philadelphia, PA 19104.
3. Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.
4. Abramson Cancer Center, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104.