[1] Zhengzhou Univ, Henan Univ Peoples Hosp, Henan Prov Peoples Hosp, Dept Thorac Surg,Henan Key Lab Nursing,Peoples Hos, 7 Weiwu Rd, Zhengzhou 450003, Henan, Peoples R China
[2] Henan Univ, Inst Nursing & Hlth, Kaifeng 475004, Henan, Peoples R China
[3] Zhengzhou Univ, Henan Univ, Henan Prov Peoples Hosp, Dept Thorac Surg,Peoples Hosp, Zhengzhou 450003, Henan, Peoples R China