2 Department of Obstetrics, Gynecology and Women's Health, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY; Present affiliation: Department of Obstetrics and Gynecology, Columbia University Irving Medical Center, New York, NY. Electronic address: Tlm2107@cumc.columbia.edu.
3 Departments of Biostatistics and Obstetrics, Gynecology and Women's Health, Montefiore Medical Center, Bronx, NY; Present affiliation: Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY.
4 Center for Biomedical Research, Population Council, New York, NY.