[1] Keio Univ, Sch Med, Ctr Gen Med Educ, Tokyo, Japan
[2] Keio Univ, Sch Med, Dept Emergency & Crit Care Med, Tokyo, Japan
[3] Nippon Med Sch, Dept Emergency & Crit Care Med, Tokyo, Japan
[4] Teikyo Univ, Sch Med, Dept Emergency Med, Trauma & Resuscitat Ctr, Tokyo, Japan
[5] Kyorin Univ, Sch Med, Dept Trauma & Crit Care Med, Tokyo, Japan
[6] Hokkaido Univ, Grad Sch Med, Div Acute & Crit Care Med, Dept Anesthesiol & Crit Care Med, Sapporo, Hokkaido, Japan
[7] Natl Def Med Coll, Res Inst, Div Traumatol, Tokorozawa, Saitama, Japan
[8] Tohoku Univ, Grad Sch Med, Div Emergency Med, Sendai, Miyagi, Japan
[9] Osaka Univ, Grad Sch Med, Dept Traumatol & Acute Crit Med, Osaka, Japan
[10] Univ Occupat & Environm Hlth, Dept Emergency Med, Kitakyushu, Fukuoka, Japan
[11] Kawasaki Municipal Hosp, Emergency Crit Care Ctr, Kawasaki, Kanagawa, Japan
[12] Hyogo Coll Med, Dept Emergency Crit Care & Disaster Med, Nishinomiya, Hyogo, Japan
[13] Kurume Univ, Sch Med, Dept Emergency & Crit Care Med, Kurume, Fukuoka, Japan
[14] St Marys Hosp, Ctr Trauma, Dept Emergency & Crit Care Med, Kurume, Fukuoka, Japan
[15] Yamaguchi Univ, Adv Med Emergency & Crit Care Ctr, Yamaguchi, Japan
[16] Fujita Hlth Univ, Dept Emergency & Acute Intens Care Med, Toyoake, Aichi, Japan
[17] Kawasaki Med Sch, Dept Acute Med, Kurashiki, Okayama, Japan
[18] Aichi Med Univ Hosp, Adv Crit Care Ctr, Nagakute, Aichi, Japan
[19] Iwate Med Univ, Dept Crit Care Med, Morioka, Iwate, Japan