About the Authors

Gregory A. Price

Affiliation Department of Microbiology, University of Colorado School of Medicine, Aurora, Colorado, United States of America

Kim McFann

Affiliation Colorado Biostatistics Consortium, Colorado School of Public Health, Aurora, Colorado, United States of America

Randall K. Holmes

randall.holmes@ucdenver.edu

Affiliation Department of Microbiology, University of Colorado School of Medicine, Aurora, Colorado, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GAP RKH. Performed the experiments: GAP. Analyzed the data: GAP KM RKH. Contributed reagents/materials/analysis tools: GAP KM RKH. Wrote the paper: GAP KM RKH.