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. 2010 May 17;5(5):e10598. doi: 10.1371/journal.pone.0010598

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Frank et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The top panel presents the distributions of species richness indices (S_obs) calculated for nares specimens obtained from hospitalized or healthy adults. The middle panel summarizes sample biodiversity (Shannon diversity index H_o) and the lower panel presents species evenness (H_o/H_max. H_o = Shannon index; H_max = maximum value of H_o for a specimen). Significance levels are indicated by * p<0.05; *** p<0.001.