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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Alpha diversity estimates of the oral microbial community. Comparison of (a) InvSimpson index and (b) Shannon index in the oral microbiota between non-drinkers and drinkers. p values were calculated by the linear regression model.