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. 2021 Sep 17;12:728603. doi: 10.3389/fgene.2021.728603

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Copyright © 2021 Hastings, Eisenberg and Shalev.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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External validity metrics for T/S ratios calculated using different amplification efficiencies. (A) Within-person Pearson correlation between leukocyte and buccal sample T/S ratios collected at the same time point. Correlations calculated controlling for sex and age. (B) Pearson correlations between age and T/S ratios. Correlations calculated controlling for sex and tissue (leukocyte/buccal). (C) Pearson correlation between T/S ratios of parent and offspring pairs. Correlations calculated controlling for offspring sex, parental age, offspring age, and tissue (leukocyte/buccal). CI, confidence interval.