About the Authors

Joanna Y. Lee

Affiliation Department of Biology, Stanford University, Stanford, California, United States of America

Tim Stearns

stearns@stanford.edu

Affiliations Department of Biology, Stanford University, Stanford, California, United States of America, Department of Genetics, Stanford School of Medicine, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JYL TS. Performed the experiments: JYL. Analyzed the data: JYL TS. Contributed reagents/materials/analysis tools: JYL TS. Wrote the paper: JYL TS.