1. Department of Emergency Medicine Fujian Provincial Hospital Fujian Institute of Emergency Medicine Fujian Medical University Fuzhou China
2. Department of Emergency Medicine Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
3. Department of Emergency Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
4. Weil Institute of Emergency and Critical Care Research School of Medicine Virginia Commonwealth University Richmond VA USA
5. Department of Emergency Medicine Beijing Chao‐Yang Hospital Capital Medical University Beijing China
6. Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation Beijing Chao‐Yang Hospital Capital Medical University Beijing China