The authors regret there is an error in the published manuscript that has come to their attention. The concentration of the povidone-iodine irrigation used in this study was 0.1%. This concentration is still within the bactericidal range. The published concentration of 1% resulted from an inaccurate calculation. This error is present in the following sections: (1) Abstract, Results section, line 3; (2) Abstract, Conclusions section, line 3; (3) Table 1, row 2/column 1; (4) Materials and Methods, Section 2.2, lines 2 and 3; (5) Results, Section 3.3.2, line 4; and (6) Conclusions, line 6.
The authors would like to apologise for any inconvenience caused.