1. School of Nursing , Qingdao University , Qingdao , Shandong , China
2. Nursing Department , The Affiliated Hospital of Qingdao University , Qingdao , Shandong , China
3. Emergency Department , Qilu Hospital of Shandong University (Qingdao) , Qingdao , Shandong , China
4. Intensive Care Unit, Tianjin Medical University General Hospital Airport Hospital , Tianjin , , China