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Typo on page 7 of paper

Posted by Loxafrican on 04 Feb 2016 at 12:02 GMT

Please note that there is a minor typo on page 7 in the 1st column, 4 lines down. It should read "without local
anaesthetic" NOT "with local anaesthetic".

Thanks to Georgia Mason for noticing this typo!

Competing interests declared: I am the corresponding author on this paper.