1 Department of Critical Care Medicine, The Harbin Medical University Cancer Hospital, Harbin, 150081 Heilongjiang Province, China.
2 Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081 Heilongjiang Province, China.
3 Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001 Heilongjiang Province, China.
4 Institute of Critical Care Medicine and Institute of Sino Russian Medical Research Center of Harbin Medical University, 150 Hapin Road, Harbin 150081, China.