1. Division of Maternal Fetal Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
2. Department of Obstetrics Gynecology and Reproductive Science, Icahn School of Medicine at Mount Sinai, New York, New York
3. Mount Sinai School of Medicine—Obstetrics and Gynecology, Maternal Fetal Medicine Associates, PLLC, New York, New York
4. Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania