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. 2019 May 15;570(7760):189–193. doi: 10.1038/s41586-019-1200-9

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 3 — A data point is defined as an ANC sentinel surveillance site used in the analysis for the given year. A site may be a hospital, city or town, or administrative region. There are a total of 9,794 ANC data points from 2000 to 2017. Countries in white have no available ANC data in the given year. Countries in dark grey were not included in the analysis.