[1] Sichuan Univ, West China Sch Nursing, West China Hosp, Chengdu 610041, Sichuan, Peoples R China
[2] Shandong First Med Univ, Sch Nursing, Tai An, Shandong, Peoples R China
[3] Shandong First Med Univ, Sch Foreign Languages, Tai An, Shandong, Peoples R China
[4] Tianjin Third Cent Hosp, Neurol Dept, Tianjin, Peoples R China
[5] Taian City Tumor Prevent Hosp, Dept Gynecol Oncol, Tai An, Shandong, Peoples R China
[6] Joint Logist Support Force Peoples Liberat Army, Dept Resp Med, Tai An, Shandong, Peoples R China
[7] Joint Logist Support Force Peoples Liberat Army, Dept Hemodialysis, Tai An, Shandong, Peoples R China