Myers S A, Waters T P, Dawson N V
Department of Obstetrics and Gynecology, MetroHealth Medical Center/Case Western Reserve University, Cleveland, OH, USA.
Department of Obstetrics and Gynecology, Loyola University Medical Center, Maywood, IL, USA.
J Perinatol. 2014 Jul;34(7):503-7. doi: 10.1038/jp.2014.9.