1 Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

2 Department of General Surgery and Surgical Oncology, Madonna del Soccorso Hospital, San Benedetto del Tronto, Italy

3 Department of General and Endocrine Surgery, University of Insubria, Varese, Italy

4 Cambridge University Hospitals, NHS Foundation Trust, Addenbrooke’s Hospital, Cambridge, United Kingdom

5 Department of General and Transplant Surgery, Sapienza University of Rome, Rome, Italy

Financial Disclosure: None reported.

Funding/Support: None reported.

Informed consent was obtained.

Correspondence: Salomone Di Saverio M.D., Ph.D., Department of General Surgery and Surgical Oncology, Madonna del Soccorso Hospital, San Benedetto del Tronto, Italy; Cambridge Colorectal Unit, Box 201, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke’s Hospital, Cambridge Biomedical Campus, Hills Rd, Cambridge CB2 0QQ, United Kingdom. E-mail: [email protected]