1. Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
2. Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT, USA
3. Departments of Microbiology and of Obstetrics and Gynecology, Ponce School of Medicine and Health Sciences, Ponce, PR, USA
4. Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA