1. Xiangya School of NursingCentral South University Changsha Hunan People's Republic of China
2. Shenzhen University Shenzhen Guangdong People's Republic of China
3. School of MedicineUniversity of California San Francisco San Francisco California
4. Second Xiangya Hospital Changsha Hunan People's Republic of China
5. School of NursingYale University New Haven Connecticut