Contents: EditorialThe Continuing Challenge of Measuring Maternal MortalityMacDorman, Marian F. PhD; Declercq, Eugene PhDAuthor Information Dr. MacDorman is from the Maryland Population Research Center at the University of Maryland, College Park, Maryland. Dr. Declercq is from the Department of Community Health Sciences at the Boston University School of Public Health, Boston, Massachusetts; email: [email protected]. Financial Disclosure The authors did not report any potential conflicts of interest. Obstetrics & Gynecology: May 2021 - Volume 137 - Issue 5 - p 761-762 doi: 10.1097/AOG.0000000000004365 Buy Metrics © 2021 by the American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.