About the Authors

Do Kyeong Song

Affiliation Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea

Young Sun Hong

Affiliation Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea

Yeon-Ah Sung

Affiliation Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea

Hyejin Lee

hyejinlee@ewha.ac.kr

Affiliation Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: HL Y-AS DKS. Data curation: HL Y-AS. Formal analysis: HL DKS. Funding acquisition: HL Y-AS. Investigation: HL Y-AS. Methodology: HL Y-AS. Project administration: HL Y-AS. Resources: HL Y-AS. Software: HL DKS. Supervision: HL DKS Y-AS YSH. Validation: HL DKS. Visualization: HL DKS. Writing – original draft: HL DKS. Writing – review & editing: HL DKS Y-AS YSH.