About the Authors

Kyunghi Choi

Affiliation Department of Insurance Benefits, National Health Insurance Cooperation, Seoul, Republic of Korea

Sung-il Cho

Affiliation Graduate School of Public Health and Institute of Health and Environment, Seoul National University Seoul National University, Seoul, Republic of Korea

Masahiro Hashizume

Affiliation Institute of Tropical Medicine and the Global Center of Excellence Program, Nagasaki University, Nagasaki, Japan

Ho Kim

hokim@snu.ac.kr

Affiliation Graduate School of Public Health and Institute of Health and Environment, Seoul National University Seoul National University, Seoul, Republic of Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HK. Performed the experiments: KC SC. Analyzed the data: KC. Contributed reagents/materials/analysis tools: MH . Wrote the paper: KC.