1. Department of Emergency Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
2. Department of Emergency Medicine, College of Medicine, Soonchunhyang University Hospital, Bucheon, Korea.
3. The Research Society for Emergency Antidotes Stock and Delivery System in Korea, Seoul, Korea.
4. Department of Emergency Medicine, Cheju Halla General Hospital, Jeju, Korea.