About the Authors

Mei Yan Lee

Affiliation Institute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Scott L. Diamond

sld@seas.upenn.edu

Affiliation Institute for Medicine and Engineering, Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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