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. 2020 Oct 12;9:e47. doi: 10.1017/jns.2020.40

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© The Author(s) 2020

This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.

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Fig. 1. — Box plot of the distribution of plasma 25-hydroxyvitamin D, as determined using an immunoassay and an LC-MS assay in adults aged 18–80 years (n 268). The box plot is presented with whiskers with the maximum 1⋅5 interquartile range.