1 Department of Emergency Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
2 Department of Emergency Medicine, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea; Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea. Electronic address: timethe@gmail.com.
3 Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea; Department of Emergency Medicine, Seoul National University College of Medicine and Bundang Hospital, Gyeonggi, Republic of Korea.
4 Department of Emergency Medicine, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea; Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea.
5 Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea; Department of Emergency Medicine, Seoul National University College of Medicine and Boramae Medical Centre, Seoul, Republic of Korea.
6 Laboratory of Emergency Medical Services, Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea; Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.