About the Authors

Myung-Gyu Kim

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Sun Chul Kim

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Yoon Sook Ko

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Hee Young Lee

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Sang-Kyung Jo

sang-kyung@korea.ac.kr

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Wonyong Cho

Affiliation Department of Internal Medicine, Korea University Medical College, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MGK SKJ WYC. Performed the experiments: MGK YSK HYL SCK. Analyzed the data: MGK SKJ. Wrote the paper: MGK SKJ.