[1] Cent South Univ, Xiangya Hosp 3, Nursing Dept, Changsha, Peoples R China
[2] Cent South Univ, Xiangya Sch Nursing, Changsha, Peoples R China
[3] Cent South Univ, Dept Cardiol, Xiangya Hosp 3, Changsha, Peoples R China
[4] Cent South Univ, Dept Emergency, Xiangya Hosp 3, Changsha, Peoples R China
[5] Cent South Univ, Coll Hunan Prov, Key Lab Med Informat Res, Changsha, Peoples R China