^†Departamento Anatomia Patologica Hospital Universitari i Politecnic La Fe Valencia Spain

^*Department of Cellular Pathology

^‡Department of Colorectal Surgery, John Radcliffe, Oxford University Hospitals NHS Foundation Trust, Oxford, UK

Conflicts of Interest and Source of Funding: The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.