About the Authors

Xiang Chen

Contributed equally to this work with: Xiang Chen, Kelly Cho

Affiliation Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut, United States of America

Kelly Cho

Contributed equally to this work with: Xiang Chen, Kelly Cho

Affiliation Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut, United States of America

Burton H. Singer

Affiliation Emerging Pathogens Institute, University of Florida, Gainesville, Florida, United States of America

Heping Zhang

heping.zhang@yale.edu

Affiliation Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XC KC HZ. Performed the experiments: XC KC HZ. Analyzed the data: XC KC HZ. Contributed reagents/materials/analysis tools: XC KC HZ. Wrote the paper: XC KC BHS HZ.