About the Authors

Hao Wu

hao.wu@emory.edu (HW); hji@jhsph.edu (HJ)

Affiliation Department of Biostatistics and Bioinformatics, Emory University, Atlanta, Georgia, United States of America

Hongkai Ji

hao.wu@emory.edu (HW); hji@jhsph.edu (HJ)

Affiliation Department of Biostatistics, Johns Hopkins University, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HW. Analyzed the data: HW. Wrote the paper: HW HJ.