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. 2017 Jan 13;12(1):e0169268. doi: 10.1371/journal.pone.0169268

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© 2017 Pernod et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 1 — X axis was age (divided into subgroups of 5 years). Y axis was percentage of population for each category of age. US patients are depicted in grey; OUS patients are depicted in black. P < 0.0001 for comparing the overall differences between US versus OUS.