1. Department of Surgery, Erasmus MC University , Rotterdam , The Netherlands
2. General and Upper GI Surgery Division, University Hospital of Verona , Verona , Italy
3. Department of Medical Oncology, Erasmus MC Cancer Centre , Rotterdam , The Netherlands
4. Northern Centre for Cancer Care, Freeman Hospital , Newcastle-upon-Tyne , UK
5. Northern Oesophagogastric Unit, Royal Victoria Infirmary , Newcastle-Upon-Tyne , UK
6. School of Medical Education, Newcastle University , Newcastle-upon-Tyne , UK