[1] Cent South Univ, Xiangya Sch Nursing, 172 Tongzipo Rd, Changsha 410013, Hunan Prov, Peoples R China
[2] Cent South Univ, Xiangya Hosp, Intens Care Unit, Cardiovascular Surg Dept, Changsha, Hunan, Peoples R China
[3] Cent South Univ, Xiangya Hosp, Teaching & Res Sect Clin Nursing, Changsha, Hunan, Peoples R China
[4] City Univ Hong Kong, Dept Social & Behav Sci, Hong Kong, Peoples R China
[5] Key Lab Nursing Hunan Prov, Changsha, Peoples R China