1. Department of Nursing, Medical School, Taizhou University, Taizhou, Zhejiang, China
2. Centre for Gerontological Nursing, School of Nursing, The Hong Kong Polytechnic University, Hong Kong, China
3. School of Nursing, Southern Medical University, Guangzhou, Guangdong, China
4. Nursing Department, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, China
5. Guangzhou Youhao Senior Apartment, Guangzhou, Guangdong, China