1. Department of Obstetrics, Gynecology, and Reproductive Sciences, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
2. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Texas at Houston, Houston, TX, USA
3. Department of Obstetrics, Gynecology, and Reproductive Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
4. Maternal Fetal Medicine Associates, PLLC, New York, NY, USA