[1] Zhengzhou Univ, Affiliated Hosp 1, Dept Emergency, Zhengzhou 450002, Peoples R China
[2] Zhengzhou Univ, Affiliated Hosp 1, Dept Med Records, Zhengzhou 450002, Peoples R China
[3] Zhengzhou Univ, Affiliated Hosp 1, Dept Neurol, Zhengzhou 450002, Peoples R China
[4] Zhengzhou Univ, Affiliated Hosp 1, Dept Cardiol, Zhengzhou 450002, Peoples R China
[5] Zhengzhou Univ, Affiliated Hosp 1, Inst Clin Med, Dept Urol, Zhengzhou 450002, Peoples R China
[6] Zhengzhou Univ, Affiliated Hosp 1, Inst Clin Med, Zhengzhou 450002, Peoples R China