1. The University of Chicago, Department of Radiology, Chicago, Illinois, United States
2. The University of Chicago, Department of Obstetrics and Gynecology/Section of Gynecologic Oncology, Chicago, Illinois, United States
3. The University of Chicago, Department of Obstetrics and Gynecology/Section of Ultrasound, Genetics, and Fetal Neonatal Care Center, Chicago, Illinois, United States