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. 2019 Dec 3;5:51. doi: 10.1186/s40795-019-0313-8

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Nutrient intake in relation to the reference range: Supplement users vs. non-supplement users (males; mean + SD). OMN = omnivores, LOV = lacto-ovo vegetarians, VEG = vegans, SU = supplement users, non-SU = non-supplement users, recommended intake of the German, Austrian and Swiss Nutrition Societies (Deutsche, Österreichische und Schweizerische Gesellschaften für Ernährung, D-A-CH) [33]. The error bars represent the standard deviations of the average daily nutrient intake. Differences between SU and non-SU were analyzed using the Mann-Whitney U test. *p ≤ 0.05