About the Authors
Department of Vector Ecology & Environment, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
The authors have declared that no competing interests exist.
Conceived and designed the experiments: HK YH YTN HTN MT. Performed the experiments: HK YH YTN SHT. Analyzed the data: HK. Contributed reagents/materials/analysis tools: HK MT. Wrote the paper: HK.