About the Authors

Guy M. L. Perry

perryg@upstate.edu

Affiliation Department of Medicine, SUNY Upstate Medical University, Syracuse, New York, United States of America

Steven J. Scheinman

Affiliation Department of Medicine, SUNY Upstate Medical University, Syracuse, New York, United States of America

John R. Asplin

Affiliation Litholink Corporation, Chicago, Illinois United States of America

Competing Interests

The authors have the following competing interest: JR Asplin is a Research Director at Litholink, Inc. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: GMLP JRA. Performed the experiments: JRA. Analyzed the data: GMLP. Contributed reagents/materials/analysis tools: JRA. Wrote the paper: GMLP SJS JRA.