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(A) Nonmetric multidimensional scaling (NMDS) ordination of bacterial communities based on Bray-Curtis similarity. (B) The comparison of bacterialcommunity diversity indices for different groups. H-I, hospital influent; H-E, hospital effluent; N-I, non-hospital influent; N-E, non-hospital effluent. Different letters (a, b, c) above bars indicate significant difference at P < 0.05 based on nonparametric Kruskal-Wallis tests.
