1. Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA;
2. Department of Hematology, Qilu Hospital, Shandong University, Jinan, Peoples Republic of China;
3. Department of Experimental Oncology and Molecular Medicine, Istituto Nazionale dei Tumori, Milan, Italy; and
4. Abramson Cancer Center, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA