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. 2017 Feb 13;12(2):e0172183. doi: 10.1371/journal.pone.0172183

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© 2017 Nwosu 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 3 — Serum 25(OH)D was significantly lower in the subjects with IBS compared to controls (ANOVA, p = 0.04). Both groups had higher serum concentration of 25(OH)D in the summer compared to winter (ANOVA, p = 0.04). There were no interactions between the groups and seasons (ANOVA, p = 0.24).