. Author manuscript; available in PMC: 2021 Mar 30.
Published in final edited form as: Nat Microbiol. 2020 May 11;5(8):1016–1025. doi: 10.1038/s41564-020-0716-y
Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use: http://www.nature.com/authors/editorial_policies/license.html#terms