About the Authors
Genetics Department, Harvard Medical School, Boston, Massachusetts, United States of America
Section of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
The authors have declared that no competing interests exist.
TR, DSZ, CRR, WFD, and REV conceived and designed the experiments. TR, DSZ, and REV performed the experiments. TR, DSZ, CRR, WFD, and REV analyzed the data. TR, DSZ, CRR, and REV contributed reagents/materials/analysis tools. TR, WFD, and REV wrote the paper.