About the Authors

Daniel B. Weissman

dbw@ist.ac.at

Affiliation Institute of Science and Technology Austria, Klosterneuburg, Austria

Nicholas H. Barton

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: DBW NHB. Wrote the paper: DBW NHB. Wrote the simulations: DBW NHB.