1. Department of Emergency Medicine; Kyoto Prefectural University of Medicine; Kyoto Japan
2. Division of Environmental Medicine and Population Sciences, Department of Social and Environmental Medicine, Graduate School of Medicine; Osaka University; Suita Japan
3. Department of Traumatology and Acute Critical Medicine; Osaka University Graduate School of Medicine; Suita Japan
4. Department of Public Health; Tokyo Women's Medical University; Tokyo Japan
5. Osaka Municipal Fire Department; Osaka Japan
6. Kyoto University Health Services; Kyoto Japan