About the Authors

Benjamin M. Althouse, Derek A. T. Cummings
Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Yih Yng Ng
Headquarters Medical Corps, Singapore Armed Forces, Singapore, Singapore

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Performed the experiments: BMA. Analyzed the data: BMA. Wrote the paper: BMA YYN DATC. Conceived the study: DATC YYN. Designed the analysis: BMA DATC.