Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
There was a error in the equal contributions designation and in the corresponding address of the second author in the online version of the article. Nico Posnien and Corinna Hopfen contributed equally to this work. The listed current address is for Corinna Hopfen. This information in the PDF version of the paper is correct.
Competing Interests: No competing interests declared.
View on publisher site
