1 Department of Emergency Medicine, Myongji Hospital, Goyang, Republic of Korea.
2 Department of Emergency Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea. Electronic address: arendt75@hanyang.ac.kr.
3 Department of Emergency Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea.
4 Department of Emergency Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea.