Richter Holly E, Parden Alison M, Gleason Jonathan L
Department of Obstetrics and Gynecology University of Alabama at Birmingham Birmingham, Alabama Department of Obstetrics and Gynecology Virginia Tech Carilion School of Medicine, Roanoke, Virginia.
Obstet Gynecol. 2013 May;121(5):1108-1109. doi: 10.1097/AOG.0b013e31828fc680.