About the Authors

Song Yang

Affiliation Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, California, United States of America

Philip E. Bourne

pbourne@ucsd.edu

Affiliation Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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