Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea; Department of Emergency Medicine, Graduate School of Medicine, Kangwon National University, Chuncheon, 24289, Republic of Korea. Department of Radiology, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea. Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea. Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea. Electronic address: youjsmd@yuhs.ac. Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea.