1. Emergency Department, Tongji Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan China
2. School of nursing Wuhan University Wuhan China
3. Population and Health Research Center Wuhan University Wuhan China
4. Emergency Department of the East Campus Renmin Hospital of Wuhan University Wuhan China
5. Department of Pain and Translational Symptom Science University of Maryland School of Nursing Baltimore Maryland USA