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. 2020 Jun 3;582(7810):73–77. doi: 10.1038/s41586-020-2338-1

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© The Author(s), under exclusive licence to Springer Nature Limited 2020

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Extended Data Fig. 2 — The size of each circle shows the number of data sources for each region and year, and the colours indicate the relative size of national, subnational and community data sources.