1. Xiangya School of NursingCentral South University Changsha PR China
2. Youxian General Hospital Youxian PR China
3. Department of Health Education Yongding Maternal and Children’s Hospital Zhangjiajie PR China
4. Nursing Department Third Xiangya HospitalCentral South University Changsha PR China
5. School of Nursing University of California San Francisco CA USA