[1] Henan Prov Peoples Hosp, Dept Nursing, Henan Prov Key Med Lab Nursing, Zhengzhou, Henan, Peoples R China
[2] Cent South Univ, Xiangya Hosp 3, Hlth Management Ctr, Dept Cardiol, Changsha, Hunan, Peoples R China
[3] Cent South Univ, Xiangya Sch Nursing, Changsha, Hunan, Peoples R China
[4] Univ Wollongong, Australian Hlth Serv Res Inst, Palliat Aged Care Outcomes Program, Wollongong, NSW, Australia
[5] Univ Western Australia, Sch Populat & Global Hlth, Perth, WA, Australia