Correction to: Nature Communications https://doi.org/10.1038/s41467-019-11057-4, published online 16 July 2019.

The original version of this Article omitted the following from the end of the Acknowledgements: ‘We gratefully acknowledge the German Research Foundation (DFG) for supporting the project: RA3062/3-1.’ This has now been corrected in both the PDF and HTML versions of the Article.