1. Department of Emergency Medicine, Seoul Metropolitan Government – Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, Republic of Korea
2. Department of Emergency Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, Republic of Korea
3. Department of Emergency Medicine, Seoul National University Hospital, 101, Daehak-ro Jongno-gu, Seoul, Republic of Korea
4. Department of Emergency Medicine, Seoul National University Bundang Hospital 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea