College PublicationsACOGObstetrics & Gynecology: September 2017 - Volume 130 - Issue 3 - p 1 doi: 10.1097/AOG.0000000000002290 Free Metrics This document has been withdrawn or is no longer available Please contact the Resource Center at the American College of Obstetricians and Gynecologists ([email protected]; 202-863-2518) for further information Current clinical guidance from ACOG is available online at https://www.acog.org/clinical© 2017 by The American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.View full article text