About the Authors

Mika Oki

mrs_southern_wind@yahoo.co.jp

Affiliation Department of International Health, Institute of Tropical Medicine, The Global Center of Excellence, Nagasaki University, Nagasaki, Japan

Toshihiko Sunahara

Affiliation Department of International Health, Institute of Tropical Medicine, The Global Center of Excellence, Nagasaki University, Nagasaki, Japan

Masahiro Hashizume

Affiliation Department of International Health, Institute of Tropical Medicine, The Global Center of Excellence, Nagasaki University, Nagasaki, Japan

Taro Yamamoto

Affiliation Department of International Health, Institute of Tropical Medicine, The Global Center of Excellence, Nagasaki University, Nagasaki, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TS MO. Performed the experiments: MO. Analyzed the data: MO TS MH TY. Wrote the paper: MO.