1. Department of Emergency, the First Affiliated Hospital of Soochow University, Suzhou, China
2. Department of Echocardiography, the First Affiliated Hospital of Soochow University, Suzhou, China
3. Department of Physiology and Neuroscience, Medical College of Soochow University, Suzhou, China
4. Department of Emergency, Suzhou Municipal Hospital of Nanjing Medical University, Suzhou, China
5. Department of Critical Care Medicine, the First Affiliated Hospital of Soochow University, Suzhou, China.