[1] Cent South Univ, Xiangya Nursing Sch, Changsha, Hunan, Peoples R China
[2] Cent South Univ, Xiangya Hosp 3, Changsha, Hunan, Peoples R China
[3] Cent South Univ, Xiangya Hosp 3, Nursing Dept Outpatient & Emergency Operating Room, Changsha, Hunan, Peoples R China