1. Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, China
2. The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, China
3. Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China
4. The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China