1. Department of Nursing, Nanfang Hospital, Southern Medical University , Guangzhou, Guangdong, 510515 , PR China
2. School of Nursing, Southern Medical University , Guangzhou, Guangdong, 510515 , PR China
3. Department of Nursing, Zhuhai Fifth People's Hospital , Zhuhai, Guangdong, 519090 , PR China
4. Department of Nursing, Long Gang Districy People’s Hospital of Shen Zhen , ShenZhen, Guangdong, 518172 , PR China