About the Authors
- Van M. Savage, Eric J. Deeds, Walter Fontana
- Department of Systems Biology, Harvard Medical School, Boston, Massachusetts, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: VMS. Analyzed the data: VMS EJD. Contributed reagents/materials/analysis tools: VMS EJD. Wrote the paper: VMS EJD WF.