[Wu, Lirong; Yin, Jinzhi; Zhou, Hui] Univ South China, Sch Nursing, Hengyang Med Sch, Hengyang 421001, Hunan, Peoples R China.
[Wu, Lirong; Yin, Jinzhi; Zhou, Hui] Univ South China, Affiliated Changsha Cent Hosp, Hengyang Med Sch, Changsha 410013, Hunan, Peoples R China.
[Liu, Minhui; Huang, Chongmei] Cent South Univ, Nursing Sch, Changsha 410013, Peoples R China.
[Hu, Hongjuan] Univ South China, Affiliated Hosp 1, Dept Publ Serv, Nursing Dept,Hengyang Med Sch, Hengyang 421001, Hunan, Peoples R China.