Affiliation: | 1. Department of Emergency Medicine, Eulji University, , Daejeon, Korea;2. Occupational and Environmental Medicine, Eulji University, , Daejeon, Korea;3. Department of Emergency Medical Service Technology, Daejeon Health Science College, , Daejeon, Korea;4. Department of Emergency Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea, , Daejeon, Korea;5. Department of Emergency Medicine, Yeoeudo St. Mary's Hospital, The Catholic University of Korea, , Seoul, Korea |