About the Authors
- Joseph E. Peterson
- Department of Geology, University of Wisconsin Oshkosh, Oshkosh, Wisconsin, United States of America
- Christopher P. Vittore
- Department of Radiology, Rockford Memorial Hospital, Rockford, Illinois, United States of America
The authors have declared that no competing interests exist.
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.