[1] Yangzhou Univ, Sch Nursing, Yangzhou 225009, Jiangsu, Peoples R China
[2] Peoples Hosp Liuhe Dist, Dept Nursing Adm, Nanjing 211500, Jiangsu, Peoples R China
[3] Med Coll Yangzhou Univ, Yangzhou 225009, Jiangsu, Peoples R China
[4] Peoples Hosp Liuhe Dist, Med Dept, Nanjing 211500, Jiangsu, Peoples R China