Correction to: Nature Communications 10.1038/s41467-021-25348-2, published online 7 September 2021.
The original version of this Article contained an error in the labels of <Fig. 5d>, which incorrectly read ‘<Dkk4A18V/Dkk4>’ and ‘<Dkk4C63Y/Dkk4>’. The correct version states ‘<Dkk4A18V>’ and ‘<Dkk4C63Y>’.
This has been corrected in both the PDF and HTML versions of the Article.