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. 2021 Jan 22;9(1):2325967120975100. doi: 10.1177/2325967120975100

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — Yearly average 25(OH)D levels by player position. 25(OH)D, 25-hydroxyvitamin D; DB, defensive back; DL, defensive lineman; K, kicker; OL, offensive lineman; QB, quarterback; RB, running back; snapper, long snapper; TE, tight end; WR, wide receiver.