About the Authors

Guo-Cheng Yuan

To whom correspondence should be addressed. E-mail: gcyuan@jimmy.harvard.edu (GY); jliu@stat.harvard.edu (JSL)

Affiliations Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America , Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America

Jun S Liu

To whom correspondence should be addressed. E-mail: gcyuan@jimmy.harvard.edu (GY); jliu@stat.harvard.edu (JSL)

Affiliations Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, United States of America , Department of Statistics, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

GY conceived and designed the experiments and performed the experiments. GY and JSL analyzed the data, contributed reagents/materials/analysis tools, and wrote the paper.