1 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Vanderbilt University School of Medicine, Nashville, TN.
2 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Wake Forest School of Medicine, Winston-Salem, NC.
3 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Duke University School of Medicine, Durham, NC.
4 Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Brown University School of Medicine, Providence, RI.
5 Department of Biostatistics & Bioinformatics, Duke University School of Medicine, Durham, NC.
6 Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Duke University School of Medicine, Durham, NC.
7 Department of Anesthesiology, Duke University School of Medicine, Durham, NC.
8 Department of Radiology and Medicine, Duke University School of Medicine, Durham, NC.
9 Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynecology, Duke University School of Medicine, Durham, NC. Electronic address: [email protected].