On page 1549 the significant difference in MD values was stated as:
(−5.22 ± 4.07 dB and −2.72 ± 4.06 dB, P = 0.0385)
It should have been:
(−5.47± 4.78 dB and −5.26 ± 5.22 dB, P = 0.6757)
Figure 2 legend was missing the words:
Left axis relates to the bars and right axis relates to the line chart.