[Leng, Juanjuan; Peng, Fang; Ma, Mengqi; Jiang, Xuemeng; Run, Han; Li, Jianzhi; Xiao, Luwei] Univ South China, Sch Nursing, Hengyang, Hunan, Peoples R China.
[Tang, Li; Peng, Fang; Li, Qingting; Wang, Huaqin] Cent South Univ, Xiangya Hosp 2, Dept Crit Care Med, Changsha, Hunan, Peoples R China.
[Li, Jianzhi] Univ South China, Sch Nursing, 28 Changsheng West Rd, Hengyang 421001, Hunan, Peoples R China.