[1] South Med Univ, Sch Nursing, 1023 Tainan Rd, Guangzhou 510515, Peoples R China
[2] South Med Univ, Sch Nursing, Nursing, Guangzhou, Peoples R China
[3] Southern Med Univ, Dept Nursing, Teaching & Res Sect, Affiliated Hosp 3,Nuring, Guangzhou, Peoples R China