1. Department of Medical and Surgical Sciences and Translational Medicine, Sapienza University of Rome, 29121 Rome, Italy
2. Department of Anesthesiology and Intensive Care, Guglielmo da Saliceto Hospital, 29122 Piacenza, Italy
3. Department of Surgical, Pediatric and Diagnostic Sciences, University of Pavia, 27100 Pavia, Italy
4. Paolo Procacci Foundation, 00193 Rome, Italy
5. Emergency Surgery Unit, Guglielmo da Saliceto Hospital, 29122 Piacenza, Italy
6. General Surgery Unit, Guglielmo da Saliceto Hospital, 29122 Piacenza, Italy