Institution: | 1. Department of Emergency Medicine, School of Medicine, Konkuk University, Seoul, 143-701, Korea 2. Department of Emergency Medicine, Wonju College of Medicine, Yonsei University, Gangwon, 220-710, Korea 3. Department of Mechanical System Design, College of Engineering, Hongik University, Seoul, 121-791, Korea 4. Department of Emergency Medical Service, Korean National University of Transportation, Chungbuk, 380-702, Korea
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