About the Authors

Avinash Patwardhan

Avinash.Patwardhan@Walgreens.com

Affiliation Walgreen Co., Deerfield, Illinois, United States of America

Robert Bilkovski

Competing Interests

Both the authors are full time employees of Walgreen Co. 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: RB AP. Performed the experiments: AP. Analyzed the data: AP. Wrote the paper: AP.