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Treatment with chlorhexidine caused significant alterations to the oral microbiome assessed by oral swabs, but not saliva, based on weighted β-diversity analyses. Comparisons shown are of paired pre-treatment and post-treatment samples in patients in the chlorhexidine and no-treatment arms for (a) oral swabs (rank sum P = 0.013) and (b) saliva (rank sum P = 0.24).
