1. From the Department of Neurosurgery, National Hospital Organization Disaster Medical Center, Tachikawa, Tokyo, Japan (M.E., H.Y.)
2. Department of Acute Critical Care and Disaster Medicine (M.E., Y.O.), Tokyo Medical and Dental University Graduate School of Medicine, Japan
3. Trauma and Acute Critical Care Medical Center, Tokyo Medical and Dental University Hospital of Medicine, Japan (A.E., Y.O.).
4. Department of Health Policy and Informatics (K.F.), Tokyo Medical and Dental University Graduate School of Medicine, Japan