About the Authors

Qing Zhang

Current address: Currently at eBay Inc., San Jose, California, United States of America

Affiliation Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America

Hong Yu

hong.yu@umassmed.edu

Affiliations Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America, VA Central Massachusetts, Leeds, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: QZ. Performed the experiments: QZ. Analyzed the data: QZ. Contributed reagents/materials/analysis tools: QZ. Wrote the paper: QZ HY.