1. Department of Nursing, Nanfang Hospital, Southern Medical University, Guangzhou, China
2. School of Nursing, Southern Medical University, Guangzhou, China
3. Dental Department, Nanfang Hospital, Southern Medical University, Guangzhou, China
4. Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, China
5. School of Nursing, Guangzhou Medical University, Guangzhou, China