1. Department of Emergency Medicine, Korea University Anam Hospital, Seoul, Republic of Korea.
2. Department of Emergency Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
3. Faculty of Medicine, Universiti Teknologi MARA, Shah Alam, Malaysia.
4. Department of Emergency Medicine, National Taiwan University Hospital, Taipei City, Taiwan.
5. Graduate School of Emergency Medical Service System, Kokushikan University, Tokyo, Japan.
6. Department of Emergency Medicine, Korea University Ansan Hospital, Ansan-si, Republic of Korea.
7. Department of Radiology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Republic of Korea.