Biography：
1990 : M.D., Yonsei University College of Medicine, Seoul, Korea
1995 : M.S., Yonsei University Postgraduate School, Seoul, Korea
2003 : Ph.D., Ulsan University Postgraduate School, Ulsan, Korea

Mar. 2000 – Feb. 2018 Full-time Lecturer ~ Professor, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
Mar. 2006 - Feb. 2007 Research Fellow, Division of Pulmonary and Critical Care, School of Medicine, University of Colorado at Denver Heath Science Center
Mar. 2018 - present Professor, Department of Internal Medicine, College of Medicine, Yonsei University, Seoul, Korea; Chief, Division of Pulmonary and Critical Care, Yonsei University Gangnam Severance Hospital; Intensivist, Director, Rapid Response Team, Yonsei University Gangnam Severance Hospital

Editor-in-chief, Acute and Critical Care. 2016~2024
Deputy editor, Tuberculosis and Respiratory Disease 2021~2025