Correction to: Nature Physics https://doi.org/10.1038/s41567-018-0089-9, published online 2 April 2018.
In the version of this Article originally published, the Supplementary Movies were linked to the wrong descriptions. These have now been corrected. Additionally, the authors would like to note that co-authors James P. Butler and Jeffrey J. Fredberg contributed equally to this Article; this change has now been made.
The original article can be found online at https://doi.org/10.1038/s41567-018-0089-9.