About the Authors

Daniel L. Cook

dcook@u.washington.edu

Affiliations Department of Physiology and Biophysics, University of Washington, Seattle, Washington, United States of America, Department of Biological Structure, University of Washington, Seattle, Washington, United States of America, Division of Biomedical and Health Informatics, University of Washington, Seattle, Washington, United States of America

Fred L. Bookstein

Affiliations Department of Statistics, University of Washington, Seattle, Washington, United States of America, Faculty of Life Sciences, University of Vienna, Vienna, Austria

John H. Gennari

Affiliation Division of Biomedical and Health Informatics, University of Washington, Seattle, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DLC FLB JHG. Wrote the paper: DLC FLB JHG. Designed and curated ontology: DLC. Contributed physical theory: FLB. Contributed ontology theory: JHG.