1. Department of Medicine, Addenbrooke's Hospital, Cambridge, UK
2. Department of General Surgery, Addenbrooke's Hospital, Cambridge, UK
3. Department of Clinical Biochemistry, Addenbrooke's Hospital, Cambridge, UK
4. Department of Anaesthesia, Addenbrooke's Hospital, Cambridge, UK
5. Department of Nuclear Medicine, Addenbrooke's Hospital, Cambridge, UK
6. Department of Radiology, Addenbrooke's Hospital, Cambridge, UK