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. 2021 Jun 9;8:594408. doi: 10.3389/fnut.2021.594408

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Copyright © 2021 Li, Zhang and Dai.

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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Subgroup estimation of the effects of ketogenic diet supplementation on survival time. The numbers 3, 4, and 6 represent the KD ratio. The effect size of each study is proportional to the statistical weight. The diamond indicates the overall summary estimate for the analysis; the width of the diamond represents the 95% CI. SMD, standardized mean difference; CI, confidence interval.