1. Department of Critical Care Medicine, St. Joseph's University Medical Center, Paterson, NJ, USA
2. First Department of Neurology, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. Intensive Care Unit, Hospital Universitario Santa Lucía, Cartagena, Spain
4. Department of Emergency Medicine, Faculty of Medicine, University of Thessaly, Larisa, Greece
5. Department of Emergency Medicine, Tzaneio General Hospital, Piraeus, Greece
6. Department of Anesthesiology, Agia Sophia Children's Hospital, Athens, Greece
7. Department of Laboratory Medicine, Hospital Universitario Santa Lucía, Cartagena, Spain
8. Department of Anesthesiology, Faculty of Medicine, University of Thessaly, Larisa, Greece
9. Outcomes Research Consortium, Cleveland, OH, USA