1. Department of Anesthesia, the First Affiliated Hospital of Jilin University, Changchun, China
2. Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, USA
3. Department of General Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
4. Acute Lung Injury Center of Excellence and Vascular Medical Institute, University of Pittsburgh, Pittsburgh, USA