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False equations in the PDF version of the article!

Posted by mholtapp on 16 Feb 2015 at 15:10 GMT

Dear reader,
please be aware that for unknown reasons the equations 4+7 in the PDF version of the article are NOT correct!
The correct equations can be found in the HTML version of the article.

I will post another comment as soon as a correct version of the PDF is available.

Sorry for the inconvenience,
Moritz Holtappels

No competing interests declared.