1 Medical School, The University of Buckingham, Eaglestone, Milton Keynes, Buckinghamshire, UK.
2 Department of Medicine and HIV Metabolic Clinic, Milton Keynes University Hospital NHS Foundation Trust, Eaglestone, Milton Keynes, Buckinghamshire, UK.
3 Department of HIV and Blood Borne Viruses, Milton Keynes University Hospital, NHS Foundation Trust, Milton Keynes, UK.