Two institutions that provided for payment of the publication charges for the article- a funding organization and university with which authors are affiliated that disbursed the funding- were incorrectly omitted from the funding statement. The Funding Statement should read: "The article processing charge was funded by the German Research Foundation (DFG) and the Albert Ludwigs University Freiburg in the funding programme Open Access Publishing."
Footnotes
Competing Interests: No competing interests declared.