About the Authors

Joseph E. Peterson


Affiliation Department of Geology, University of Wisconsin Oshkosh, Oshkosh, Wisconsin, United States of America

Christopher P. Vittore

Affiliation Department of Radiology, Rockford Memorial Hospital, Rockford, Illinois, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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