1. Department of Emergency Medicine, Hallym Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
2. Department of Computer Science and Engineering, Kyung Hee University, Yongin, Korea.
3. Department of Emergency Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Biomedical Informatics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Division of Chronic Disease Control, Korea Centers for Disease Control and Prevention, Osong, Korea.