About the Authors

Sandra L. Taylor

sltaylor@ucdavis.edu

Affiliation Department of Statistics, University of California Davis, Davis, California, United States of America

Katherine S. Pollard

Address Current address: Gladstone Institute, University of California San Francisco, San Francisco, California, United States of America

Affiliation Department of Statistics, University of California Davis, Davis, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SLT. Performed the experiments: SLT. Analyzed the data: SLT KSP. Wrote the paper: SLT KSP.