Fig. 6From: Salivary microbiome and hypertension in the Qatari populationPrincipal Coordinates Analysis (PCoA) based on Bray–Curtis distances of salivary microbiome. Axes were scaled to the amount of variation explained; Boxplots of bray-distance matrices among the hypertension groups. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page