1. Department of Clinical and Experimental Sciences, Surgical Clinic, University of Brescia, Brescia, Italy
2. General Surgery Unit of Montichiari, ASST Spedali Civili di Brescia, Brescia, Italy
3. General Surgery Unit Chirurgia III, ASST Spedali Civili di Brescia, Brescia, Italy
4. Department of Acute Medicine, St George’s Hospital London, London, UK
5. General Surgery Unit, ASST Cremona, Cremona, Italy