1. Department of Medical Biotechnologies Division of Cardiology University of Siena Siena Italy
2. Adult Intensive Care Unit Royal Brompton and Harefield NHS Foundation Trust London UK
3. Department of Clinical Medical and Neurosciences, Respiratory Disease and Lung Transplantation Section Le Scotte Hospital University of Siena Siena Italy
4. Anesthesiology Unit Alta Val D'Elsa Hospital Siena Italy
5. Department of Medical Biotechnologies, Anesthesia and Intensive Care University of Siena Siena Italy