About the Authors
Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
National Public Health Laboratory, Ministry of Health, Sungai Buloh, Selangor, Malaysia
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MLM IK. Performed the experiments: MLM. Analyzed the data: MLM TT IK. Contributed reagents/materials/analysis tools: CKL KBC TT. Wrote the paper: MLM KBC TT IK.