About the Authors

Min-Gi Kim

Affiliations Graduate School of Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea, Departments of Occupational Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Korea

Jae-Hong Ryoo

Affiliation Departments of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Korea

Se-Jin Chang

Affiliation Graduate School of Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea

Chun-Bae Kim

Affiliation Graduate School of Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea

Jong-Ku Park

Affiliation Graduate School of Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea

Sang-Baek Koh

ysahn@dongguk.ac.kr (YSA); kohhj@yonsei.ac.kr (SBK)

Affiliation Graduate School of Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea

Yeon-Soon Ahn

ysahn@dongguk.ac.kr (YSA); kohhj@yonsei.ac.kr (SBK)

Affiliation Department of Occupational Medicine, Dongguk University Ilsan Hospital, Goyang-si, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MGK YSA SBK. Analyzed the data: MGK JHR SJC CBK YSA. Contributed reagents/materials/analysis tools: MGK JKP SBK YSA. Wrote the paper: MGK YSA.