About the Authors

Song Liu

Affiliation Department of Pathology, Stanford University School of Medicine, Stanford, California, United States of America

Bingwei Lu

bingwei@stanford.edu

Affiliation Department of Pathology, Stanford University School of Medicine, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SL BL. Performed the experiments: SL. Analyzed the data: SL BL. Wrote the paper: SL BL.