About the Authors
VM Molecular Biosciences, University of California Davis, Davis, California, United States of America
Department of Public Health Sciences, University of California Davis, Davis, California, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JHS JJR. Performed the experiments: JHS. Analyzed the data: JHS KK. Contributed reagents/materials/analysis tools: KK JJR. Wrote the paper: JHS KK JJR.