1. Department of Colorectal Surgery, Worcestershire Acute Hospitals NHS Trust, Worcester, United Kingdom.
2. Department of Surgery and Cancer, Imperial College, Chelsea and Westminster Campus, London, United Kingdom.
3. The 2nd Department of General Surgery, Athens Naval and Veterans Hospital, Athens, Greece.
4. Department of General Surgery, University Hospital of Larissa, Larissa, Greece.
5. Department of General Surgery, “Creta InterClinic” Hospital of Heraklion, Heraklion, Greece.