1. Intensive Care Unit, University Hospital of Larissa, Faculty of Medicine University of Thessaly Larissa Greece
2. Department of Physiology, Faculty of Medicine University of Thessaly Larissa Greece
3. 1st Department of Critical Care and Pulmonary Medicine ‘Evangelismos Hospital’, National and Kapodistrian University of Athens Athens Greece
4. Respiratory Medicine Department, University Hospital of Larissa, Faculty of Medicine University of Thessaly Larissa Greece
5. Department of Computer Science and Biomedical Informatics, School of Sciences University of Thessaly Lamia Greece