1. School of Nursing, Wuhan University, Wuhan, China.
2. Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.
3. Clinical Research Center of Hubei Critical Care Medicine, Wuhan, China.
4. Global Health of Project HOPE, Millwood, Maryland, USA.
5. Nursing Department, East Campus of Renming Hospital of Wuhan University, Wuhan, China.