Guy's Hospital, London, United Kingdom
Oxford University Hospitals, Oxford, Oxfordshire, United Kingdom
Royal Free Hospital, London, United Kingdom
Chelsea and Westminster Hospital NHS Foundation Trust, London, United Kingdom
Royal Cornwall Hospital, Truro, United Kingdom
Royal Hampshire County Hospital, Winchester, Hampshire, United Kingdom
Leeds Teaching Hospitals, Leeds, United Kingdom
Valentina Cardi, London, United Kingdom
Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, London, United Kingdom
The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, United Kingdom
King's College Hospital NHS Foundation Trust, London, United Kingdom