1. Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
2. Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, Brazil
3. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
4. Center for Reproductive Health Sciences, Washington University School of Medicine, St. Louis, MO, USA