About the Authors
Chromosome Stability Section, Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MAR JWW. Performed the experiments: JWW. Analyzed the data: MAR JWW. Contributed reagents/materials/analysis tools: MAR JWW. Wrote the paper: MAR JWW.