[1] Nihon Univ, Sch Med, Dept Acute Med, Div Emergency & Crit Care Med,Itabashi Ku, Tokyo, Japan
[2] Nihon Univ, Sch Med, Dept Hlth Care Serv Management, Itabashi Ku, Tokyo, Japan
[3] Tokyo Bay Urayasu Ichikawa Med Ctr, Emergency Med, Urayasu, Japan
[4] Natl Cerebral & Cardiovasc Ctr Hosp, Suita, Osaka, Japan
[5] Kyoto Univ, Dept Publ Hlth, Grad Sch Med, Kyoto, Japan
[6] Nihon Univ Hosp, Cardiovasc Ctr, Chiyoda Ku, Tokyo, Japan
[7] Tokyo Womens Med Univ, Dept Crit Care & Emergency Med, Shinjuku Ku, Tokyo, Japan
[8] Univ Tokyo, Dept Acute Med, Grad Sch Med, Bunkyo Ku, Tokyo, Japan
[9] Tokai Univ, Sch Med, Hiratsuka, Kanagawa, Japan
[10] St Marianna Univ, Sch Med, Yokohama Seibu Hosp, Yokohama, Kanagawa, Japan
[11] Koto Hosp, Tokyo, Japan
[12] Saitama Med Ctr, Adv Tertiary Med Ctr, Saitama, Japan
[13] Kawasaki Municipal Hosp Emergency & Crit Care Ctr, Kawasaki, Kanagawa, Japan
[14] Yokohama Municipal Citizens Hosp, Yokohama, Kanagawa, Japan
[15] Japanese Red Cross Maebashi Hosp, Maebashi, Gunma, Japan
[16] Juntendo Univ, Urayasu Hosp, Urayasu, Japan
[17] Dokkyo Med Univ, Koshigaya Hosp, Mibu, Tochigi, Japan
[18] Tokyo Med Univ, Hachioji Med Ctr, Tokyo, Japan
[19] Tokyo Womens Med Univ Hosp, Tokyo, Japan
[20] Kimitsu Chuo Hosp, Chiba, Japan
[21] Chiba Univ, Grad Sch Med, Chiba, Japan
[22] Saiseikai Utsunomiya Hosp, Utsunomiya, Tochigi, Japan
[23] Mito Saiseikai Gen Hosp, Mito, Ibaraki, Japan
[24] Dokkyo Med Univ, Mibu, Tochigi, Japan
[25] Yokohama City Univ, Med Ctr, Yokohama, Kanagawa, Japan
[26] Natl Hosp Org Yokohama Med Ctr, Yokohama, Kanagawa, Japan
[27] Natl Disaster Med Ctr, Tachikawa, Tokyo, Japan
[28] Yamanashi Prefectural Cent Hosp, Yamanashi, Japan
[29] Surugadai Nihon Univ Hosp, Tokyo, Japan
[30] Yokohama Rosai Hosp, Yokohama, Kanagawa, Japan
[31] Showa Gen Hosp, Tokyo, Japan
[32] Nippon Med Sch, Tamanagayama Hosp, Tokyo, Japan
[33] Tokyo Womens Med Univ, Yachiyo Med Ctr, Tokyo, Japan
[34] Awa Reg Med Ctr, Chiba, Japan
[35] Todachuo Gen Hosp, Toda, Saitama, Japan
[36] Japanese Red Cross Med Ctr, Tokyo, Japan
[37] St Lukes Int Hosp, Tokyo, Japan
[38] Showa Univ, Sch Med, Tokyo, Japan
[39] Totsuka Kyoritsu Hosp 1, Yokohama, Kanagawa, Japan
[40] St Marianna Univ, Sch Med, Kawasaki, Kanagawa, Japan
[41] Natl Hosp Org Mito Med Ctr, Mito, Ibaraki, Japan
[42] Tokyo Metropolitan Tama Med Ctr, Tokyo, Japan
[43] Showa Univ, Fujigaoka Hosp, Tokyo, Japan
[44] Gunma Univ, Grad Sch Med, Maebashi, Gunma, Japan
[45] Saitama Red Cross Hosp, Saitama, Japan
[46] Tokyo Metropolitan Bokutoh Hosp, Tokyo, Japan
[47] Nippon Med Coll Hosp, Tokyo, Japan
[48] Keio Univ Hosp, Tokyo, Japan
[49] Chiba Emergency Med Ctr, Chiba, Japan
[50] Teikyo Univ, Sch Med, Tokyo, Japan