1. Division of Critical Care Medicine, Department of Emergency Medicine, College of Medicine, University of Florida, Florida, USA
2. Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, University of Florida, Florida, USA
3. Division of Thoracic Surgery, Department of Surgery, College of Medicine, University of Florida, Gainesville, Florida, USA
4. Department of Anesthesiology, Division of Critical Care Medicine, University of Florida College of Medicine, Gainesville, FL, USA
5. Critical Care Research Group, The Prince Charles Hospital, University of Queensland, Brisbane, Australia
6. Department of Anaesthesiology and Intensive Care Medicine, Philipps University, Marburg, Germany