1. Translational and Clinical Research Institute Newcastle University Newcastle upon Tyne UK
2. Department of Cellular Pathology, Royal Victoria Infirmary Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
3. Department of Pathology, Aretaieion Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
4. Electron Microscopy Research Services Newcastle University Newcastle upon Tyne UK
5. Department of Clinical Sciences Malmö, Islet Cell Exocytosis, Lund University Diabetes Centre Lund University Malmö Sweden
6. Histopathology Department Royal Hallamshire Hospital Sheffield UK
7. Nuffield Department of Surgical Science University of Oxford, BRC Oxford and NHS Blood and Transplant Oxford UK
8. Institute of Transplantation, Freeman Hospital Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK