In the Supplementary Information of this Letter, the first file, labelled 'Supplementary Table 1', linked incorrectly to Supplementary Table 2 (extraction rates for food commodities) and the second file, also labelled 'Supplementary Table 1', linked to Supplementary Table 1 (GWD intensities for crops by country). In addition, details of when the raw data is unavailable and column GJ (for China) in Supplementary Table 1 were missing. These errors have been corrected in the Supplementary Information of the original Letter. (The Supplementary Information of this Corrigendum contains the incorrect version of Supplementary Table 1 for comparison.).
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