About the Authors

Monica Chan

Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

Poh Lian Lim

pllim@post.harvard.edu

Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

Angela Chow

Affiliation Department of Clinical Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore

Mar Kyaw Win

Affiliation Department of Clinical Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore

Timothy M. Barkham

Affiliation Department of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PLL MC. Performed the experiments: MC. Analyzed the data: PLL MC AC MKW. Contributed reagents/materials/analysis tools: AC MKW TMB. Wrote the paper: PLL MC AC MKW TMB.