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. 2016 Jan 5;8(1):36. doi: 10.3390/nu8010036

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Bland-Altman plot comparing VIDEO-FFQ1 with the three-day dietary record for Vitamin D daily intake (Bland-Altman index of 2.7%). FFQ1—VIDEO-FFQ filled out immediately after conducting the three-day dietary record.