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. 2021 Oct 14;49(10):03000605211039473. doi: 10.1177/03000605211039473

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© The Author(s) 2021

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work 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. — Egger’s funnel plot analysis of bias in publications reporting the X-ray repair cross-complementing 2 (XRCC2) gene Arg188His polymorphism for histidine versus arginine.