1. Emergency and Critical Care Centre; Kurashiki Central Hospital; Kurashiki Japan
2. Department of Emergency Medicine; Sugita Genpaku Memorial Obama Municipal Hospital; Fukui Japan
3. Department of Anaesthesiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Hubei China
4. Department of Respiratory Medicine; Kurashiki Central Hospital; Kurashiki Japan