1. Post Graduate School of Geriatric Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy
2. Italian Society of Prehospital Emergency Medicine (SIS 118), 74121 Taranto, Italy
3. Department of Emergency and Critical Care, Santa Croce and Carle Hospital, 12100 Cuneo, Italy
4. Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy
5. Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
6. Department of Emergency Medicine, Humanitas University Hospital, 20089 Rozzano, Italy
7. Emergency Department, IRCCS Fondazione Policlinico San Matteo, 27100 Pavia, Italy
8. Department of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy
9. Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
10. Division of Anesthesia and Critical Care Medicine, AO Ordine Mauriziano, 10128 Turin, Italy