[1] Singapore Gen Hosp, Dept Emergency Med, Singapore, Singapore
[2] Seoul Natl Univ, Coll Med, Dept Emergency Med, Seoul 110744, South Korea
[3] Natl Univ Singapore, Dept Pharm, Singapore 117548, Singapore
[4] Kokushikan Univ, Dept Emergency Syst, Tokyo, Japan
[5] Natl Taiwan Univ, Dept Emergency Med, Taipei 10764, Taiwan
[6] Seoul Natl Univ, Coll Med, Dept Emergency Med, Seoul, South Korea
[7] Osaka City Univ, Grad Sch Med, Dept Crit Care & Emergency Med, Osaka 558, Japan
[8] Natl Univ Singapore Hosp, Dept Emergency Med, Singapore 117548, Singapore
[9] Hosp Sungai Buloh, Dept Emergency Med, Kuala Lumpur, Malaysia
[10] Natl Cheng Kung Univ, Coll Med, Natl Cheng Kung Univ Hosp, Dept Emergency Med, Tainan 70101, Taiwan
[11] Kyoungpook Natl Univ Hosp, Dept Emergency Med, Taegu, South Korea
[12] Chonnam Natl Univ Hosp, Dept Emergency Med, Kwangju, South Korea
[13] Kyoto Univ, Hlth Serv, Kyoto, Japan
[14] Minist Hlth Labour & Welf, Hlth Policy Bur, Guidance Med Serv Div, Tokyo, Japan
[15] Natl Taiwan Univ, Coll Med, Dept Emergency Med, Taipei, Taiwan
[16] Keimyung Univ, Dongsan Hosp, Dept Emergency Med, Taegu, South Korea
[17] Rajavithi Hosp, Dept Emergency Med, Bangkok, Thailand
[18] Dept Emergency Med Serv, Raleigh, NC USA
[19] Mt Valley Reg EMS Agcy, Modesto, CA USA
[20] Emory Univ, Dept Emergency Med, Atlanta, GA 30322 USA