1 Division of Family Planning, Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, Maryland.
2 Division of Family Planning, Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, Massachusetts.
3 Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, Massachusetts.
4 Southwestern Women's Options, Albuquerque, New Mexico.
5 Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, Massachusetts. Electronic address: sebastian.ramos@tuftsmedicine.org.