1 Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2‑15 Yamadaoka, Suita City, Osaka, 565‑0871, Japan. ebihara.830@hp-emerg.med.osaka-u.ac.jp.
2 Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2‑15 Yamadaoka, Suita City, Osaka, 565‑0871, Japan.