[1] Kyoto Prefectural Univ Med, Dept Emergency Med, Kyoto, Japan
[2] Osaka Univ, Grad Sch Med, Dept Traumatol & Acute Crit Med, 2-15 Yamada Oka, Suita, Osaka 5650871, Japan
[3] Osaka Police Hosp, Emergency & Crit Care Med Ctr, Osaka, Japan
[4] Kansai Med Univ, Takii Hosp, Dept Emergency & Crit Care Med, Moriguchi, Osaka, Japan
[5] Tane Gen Hosp, Dept Emergency Med, Osaka, Japan
[6] Osaka City Univ, Dept Crit Care Med, Osaka, Japan
[7] Kinki Univ, Sch Med, Dept Emergency & Crit Care Med, Osaka, Japan
[8] Osaka Mishima Emergency Crit Care Ctr, Takatsuki, Osaka, Japan
[9] Kyoto Univ Hlth Serv, Kyoto, Japan
[10] Osaka Gen Med Ctr, Crit Care & Trauma Ctr, Osaka, Japan
[11] Osaka Prefectural Nakakawachi Med Ctr Acute Med, Higashiosaka, Osaka, Japan
[12] Senshu Trauma & Crit Care Ctr, Osaka, Japan
[13] Saiseikai Senri Hosp, Senri Crit Care Med Ctr, Suita, Osaka, Japan
[14] Natl Hosp Org Osaka Natl Hosp, Traumatol & Crit Care Med Ctr, Osaka, Japan
[15] Osaka City Gen Hosp, Emergency & Crit Care Med Ctr, Osaka, Japan
[16] Osaka Red Cross Hosp, Dept Pediat, Osaka, Japan
[17] Kishiwada Tokushukai Hosp, Emergency & Crit Care Med Ctr, Osaka, Japan
[18] Kansai Med Univ, Dept Emergency & Crit Care Med, Hirakata, Osaka, Japan
[19] Kyoto Univ, Sch Publ Hlth, Dept Prevent Serv, Kyoto, Japan
[20] Osaka Univ, Grad Sch Med, Dept Social & Environm Med, Div Environm Med & Populat Sci, Osaka, Japan