[1] Chang Gung Univ, Chang Gung Mem Hosp, Linkou & Coll Med, Dept Emergency Med, Taoyuan 333, Taiwan
[2] Ton Yen Gen Hosp, Dept Emergency Med, Zhubei 302, Taiwan
[3] Chang Gung Mem Hosp, Taipei Branch, Dept Emergency Med, Taipei 105, Taiwan
[4] Taoyuan Gen Hosp, Minist Hlth & Welf, Dept Emergency Med, Taoyuan 330, Taiwan
[5] Chang Gung Mem Hosp, Biostat Unit, Clin Trial Ctr, Taoyuan 333, Taiwan
[6] Ton Yen Gen Hosp, Dept Nursing, Zhubei 302, Taiwan
[7] Chang Gung Univ, Lab Epidemiol, Taoyuan 333, Taiwan
[8] Chang Gung Mem Hosp, Dept Urol, Linkou, Taiwan
[9] Chang Gung Univ, Coll Med, Taoyuan 333, Taiwan