1. Medical Information-Administration Team, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2. Medical Information Office, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3. Deptartment of Pulmonology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Deptartment of Emergency Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Medical Information-Development Team, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
6. Medical Information-Management Team, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.