About the Authors

HaoQiang Zheng, Hongwei Jia, Anupama Shankar, Walid Heneine, William M. Switzer
Laboratory Branch, Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Corresponding Author

bswitzer@cdc.gov

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HZ WH WMS. Performed the experiments: HZ HJ AS. Analyzed the data: HZ WH WMS. Wrote the paper: HZ WH WMS.