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
The authors have declared that no competing interests exist.
Performed the experiments: BMA. Analyzed the data: BMA. Wrote the paper: BMA YYN DATC. Conceived the study: DATC YYN. Designed the analysis: BMA DATC.