Affiliations

• ¹ Department of Colorectal Surgery, S. Rita Clinic, Vercelli, Italy. trompetto.mario@libero.it.
• ² Department of Colorectal Surgery, S. Rita Clinic, Vercelli, Italy.
• ³ Unit of Emergency and General Surgery, Department of Surgical Oncological and Stomatological Sciences, University of Palermo, Palermo, Italy.
• ⁴ Department of Colorectal Surgery, Barts Health, London, UK.
• ⁵ Department of General Surgery, "A. Perrino" Hospital, Brindisi, Italy.
• ⁶ General, Emergency and Minimally Invasive Surgery, Careggi University Hospital, Florence, Italy.
• ⁷ Department of General Surgery, Tor Vergata University, Rome, Italy.
• ⁸ Department of General and Minimally Invasive Surgery, University of Turin, Turin, Italy.
• ⁹ Proctology Unit, University Hospital "A Gemelli", Catholic University, Rome, Italy.