Mark B Landon, MD, Richard L. Meiling Professor and Chair, Department of Obstetrics and Gynecology, The Ohio State University College of Medicine, Columbus, Ohio, Henry L Galan, MD, Professor, Chief of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Aurora, Colorado, Eric R. M. Jauniaux, MD, PhD, FRCOG, Professor/Honorary Consultant, Academic Department of Obstetrics & Gynaecology, University College London, Royal Free Campus, London, United Kingdom, Deborah A Driscoll, MD, Luigi Mastroianni Professor and Chair, Department of Obstetrics and Gynecology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, Vincenzo Berghella, MD, Professor and Chair, Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, William A Grobman, MD, MBA, Professor in Obstetrics and Gynecology-Maternal Fetal Medicine, Center for Healthcare Studies - Institute for Public Health and Medicine and Preventive Medicine, Chicago, Illinois, Sarah J Kilpatrick, MD, PhD, Professor & The Helping Hand of Los Angeles Endowed Chair, Chair Department of Obstetrics and Gynecology, Associate Dean for Faculty Development, Cedars-Sinai Medical Center, Los Angeles, California and Alison G Cahill, MD, MSCI, Associate Professor, Chief, Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Washington University in St. Louis School of Medicine, St. Louis, Missour