1. School of Nursing, Guangdong Pharmaceutical University, Guangzhou, 510000, China
2. Hui Ya Hospital of The First Affiliated Hospital, Sun Yat-sen University, Huizhou, 516003, China
3. The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, 519099, China
4. Faculty of Health, University of Technology Sydney, Sydney, 201101, Australia
5. Taikang Yueyuan Nursing Home, Guangzhou, 510000, China