1. Emergency Department, Fatebenefratelli Isola Tiberina Hospital, Rome, Italy
2. Emergency Department, USL UMBRIA 1 Assisi (Perugia), Italy
3. Emergency Department, University “La Sapienza”, Rome, Italy
4. Emergency Department, Sandro Pertini Hospital, Rome, Italy
5. Emergency Department, S. Giovanni Addolorata Hospital, Rome, Italy
6. Internal Medicine, Catholic University School of Medicine, Rome, Italy