1. Department of Emergency Medicine, Ewha Womans University Hospital, Seoul 07985, Republic of Korea
2. Department of Emergency Medicine, College of Medicine, Chung-Ang University, Seoul 06973, Republic of Korea
3. Department of Emergency Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong-si, Gyeonggi-do 18450, Republic of Korea
4. Department of Emergency Medicine, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul 07345, Republic of Korea
5. Department of Emergency Medicine, Eulji University, Seoul 01830, Republic of Korea
6. Department of Emergency Medicine, CHA University School of Medicine, Seongnam-si 13496, Republic of Korea
7. Department of Emergency Medicine, Seoul St. Mary’s Hospital, Seoul 065691, Republic of Korea