1. Department of Cardiovascular Medicine, Yidu Central Hospital of Weifang, Weifang, Shandong, China
2. Department of Nursing, Yidu Central Hospital of Weifang, Weifang, Shandong, China
3. Department of Critical Care Medicine, Yidu Central Hospital of Weifang, Weifang, Shandong, China
4. Department of Emergency, Yidu Central Hospital of Weifang, Weifang, Shandong, China