ERRATUM
Volume 193, no. 16, p. 4153–4165, 2011. Page 4158, column 2, line 5: “(data not shown)” should be deleted.
Page 4159: The legend to Fig. 4 should read as follows. “Correlation analysis of CodY and CovRS action comparing the total core genome approach in diagrams i and ii to the I/D cutoff approach in diagrams iii and iv, described in the text. Data are based on average fold changes obtained from microarray comparison analysis (n = 5).”