1. School of Nursing, Naval Medical University, Shanghai 200433, China
2. The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong 518000, China
3. Department of Nursing, The Seventh Affiliated Hospital of Southern Medical University, Foshan, Guangdong 528244, China
4. School of Nursing, Southern Medical University, Guangzhou, Guangdong 510515, China