ACOG Publications: PDF Only: PDF OnlyACOG Committee Opinion No. 348: Umbilical Cord Blood Gas and Acid-Base AnalysisObstetrics & Gynecology 108(5):p 1319-1322, November 2006. Buy © 2006 by The American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.