1. Department of Cardiology, The First Affiliated Hospital of Anhui Medical University
2. Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University
3. Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University
4. Intensive Care Unit, Department of Neurology, The First Affiliated Hospital of Anhui Medical University
5. Department of Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University
6. Department of Emergency, The First Affiliated Hospital of Anhui Medical University