1. Departments of Critical Care Medicine, the First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, Heilongjiang, China
2. Departments of Critical Care Medicine, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, China
3. Departments of Critical Care Medicine, the Second Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, Heilongjiang, China