1. Departments of Obstetrics and Gynecology and Pathology and Liaboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania; Department of Immunoregulations, Osaka University, Japan
2. Departments of Obstetrics and Gynecology and Pathology and Liaboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania; Department of Immunoregulations, Osaka University, Japan; Division of Human Reproduction, Department of Obstetrics and Gynecology, University of Pennsylvania Medical Center, 3400 Spruce Street, 106 Dulles Building, Philadelphia, PA 19104