Christos Iavazzo1, Ioannis D Gkegkes2,3. 1. Gynaecological Oncology Department, Metaxa Cancer Hospital, Piraeus, Greece. 2. Athens Colorectal Laboratory, Athens, Greece. ioannisgkegkes@gmail.com. 3. Department of Colorectal Surgery, Royal Devon and Exeter NHS Foundation Trust, 17C James House, Residential Village, Bovemoors Lane, Exeter, EX2 5DS, UK. ioannisgkegkes@gmail.com.