DeFranco Emily, Gross Gilad, Shanks Anthony, Johnson Traci, Shen Tammy
Third-Year Fellow, Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Washington University in St Louis, School of Medicine, St Louis, MO, USA.
Am J Obstet Gynecol. 2008 Sep;199(3):322-3. doi: 10.1016/j.ajog.2008.07.025.