लेखक: Christina M. Davidson

Errol R Norwitz, MD, Ph D, MBA, Professor of Obstetrics and Gynecology, Tufts Medical Center, Boston, MA, USA George A Saade, MD, Professor of Maternal-Fetal Medicine, University of Texas Medical Branch, Galveston, TX, USA Hugh S Miller, MD, Department of Obstetrics and Gynecology, University of Arizona Medical Centre, Tucson, AZ, USA Christina M Davidson, MD, Assistant Professor of Maternal Fetal Medicine, Baylor College of Medicine, Houston, TX, USA