About the Authors
- Roman Biek
- Peter D Walsh
- Eric M Leroy
- Leslie A Real
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*To whom correspondence should be addressed. E-mail: lreal@emory.edu
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
RB, PDW, and LAR conceived and designed the experiments. RB analyzed the data. EML contributed reagents/materials/analysis tools. RB, PDW, EML, and LAR wrote the paper.