About the Authors
Institute for Stem Cell Research, Medical Research Council – Centre for Regenerative Medicine, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
Laboratory of Genetics, National Institute on Aging, National Institutes of Health Biomedical Research Center, Baltimore, Maryland, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: MAC JMB. Performed the experiments: MAC AAS. Analyzed the data: MAC AAS MSHK JMB. Contributed reagents/materials/analysis tools: MAC MSHK. Wrote the paper: MAC JMB.