About the Authors

Konrad Scheffler

kscheffler@ucsd.edu

Affiliations Department of Medicine, University of California San Diego, San Diego, California, United States of America, Department of Mathematical Sciences, Stellenbosch University, Stellenbosch, South Africa

Ben Murrell

Affiliation Department of Medicine, University of California San Diego, San Diego, California, United States of America

Sergei L. Kosakovsky Pond

Affiliation Department of Medicine, University of California San Diego, San Diego, California, United States of America

Competing Interests

KS is an academic editor for PLOS ONE. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KS BM SLKP. Performed the experiments: BM SLKP. Analyzed the data: BM SLKP. Wrote the paper: KS BM SLKP.