About the Authors

Ji-Hyun Chin

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Wook-Jong Kim

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Joonho Lee

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Yun A. Han

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Jinwook Lim

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Jai-Hyun Hwang

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Seong-Sik Cho

Affiliation Department of Occupational and Environmental Medicine, Konkuk University Chungju Hospital, Chungju, Republic of Korea

Young-Kug Kim

kyk@amc.seoul.kr

Affiliation Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: JHC YKK. Data curation: JHC SSC YKK. Formal analysis: JHC JHL SSC YKK. Investigation: JHC WJK YAH JWL JHH SSC YKK. Methodology: JHC JHH YKK. Project administration: YKK. Resources: JHL SSC. Software: SSC. Supervision: YKK. Validation: JHC WJK. Visualization: JHC YKK. Writing – original draft: JHC YKK. Writing – review & editing: JHC WJK YKK.