About the Authors

Jongho Heo

Affiliation Public Health Joint Doctoral Program, San Diego State University & University of California, San Diego, La Jolla, California, United States of America

Juhwan Oh

oh328@snu.ac.kr

Affiliation Department of Medicine, Seoul National University College of Medicine, Seoul, Korea

S. V. Subramanian

Affiliation Department of Social and Behavioral Science, Harvard School of Public Health, Boston, Massachusetts, United States of America

Yoon Kim

Affiliation Department of Health Policy and Management, Seoul National University College of Medicine, Seoul, Korea

Ichiro Kawachi

Affiliation Department of Social and Behavioral Science, Harvard School of Public Health, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JH JO. Performed the experiments: JH. Analyzed the data: JH JO. Wrote the paper: JH JO YK SS IK.