Research Article BDJ 2016; 220: 121–127
The following digital object identifier (DOI) number associated with this article was incorrect in the PDF version of the article in the original issue as published on the 12 February 2016. The correct DOI is 10.1038/sj.bdj.2016.94.
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The online version of the original article can be found at 10.1038/sj.bdj.2016.94
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Erratum. Br Dent J 223, 864 (2017). https://doi.org/10.1038/sj.bdj.2017.1047
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DOI: https://doi.org/10.1038/sj.bdj.2017.1047
