1 Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Tufts Medical Center, 800 Washington Street, Boston, MA 02111. Electronic address: [email protected].
2 Prodct, LLC, Lexington, MA.
3 PA Consulting, Lexington, MA.
4 Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Tufts Medical Center, Boston, MA.