1. Department of Colorectal/General Surgery, Milton Keynes University Hospital NHS Foundation Trust, Milton Keynes, UK
2. Department of General Surgery, Milton Keynes University Hospital NHS Foundation Trust, Milton Keynes, UK
3. Department of HIV and Blood Borne Viruses, Milton Keynes University Hospital NHS Foundation Trust, Milton Keynes, UK
4. Department of Medicine and HIV Metabolic Clinic, Milton Keynes University Hospital NHS Foundation Trust, Eaglestone, Milton Keynes, UK