1. Department of Surgical Medical, Molecular Pathology and Critical Medicine University of Pisa Pisa Italy
2. Coma Science Group GIGA‐Consciousness University of Liège and University Hospital of Liège Liège Belgium
3. Institute of Clinical Physiology National Research Council Pisa Italy
4. Division of Cardiology Department of Medicine Johns Hopkins University Baltimore MD USA
5. Azienda Ospedaliero‐Universitaria Pisana Pisa Italy