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. 2022 Feb 22;9:823898. doi: 10.3389/fmed.2022.823898

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Copyright © 2022 Jiao, Yan, Shi, Liu, Li, Lv, Ding and Li.

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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Microbiome diversity. (A–C) Species alpha diversity was estimated by the Shannon index, Simpson index, and Gini index, respectively. (D–F) Pathway alpha diversity was estimated by the Shannon index, the Simpson index, and the Gini index, respectively.