1Department of Diabetes & Metabolism, St Bartholomew's and the Royal London Hospital, Barts Health NHS Trust, London, United Kingdom; Centre for Obesity Research, Department of Medicine, University College London, London, United Kingdom; University College London Hospital Biomedical Research Centre, London, United Kingdom; Queen Mary University London, London, United Kingdom. Electronic address: ritwika.mallik@nhs.net.
2The Diabetes Centre, Homerton University Hospital NHS Foundation Trust, London, United Kingdom. Electronic address: owen.marples@oviva.com.
3Newham University Hospital, Barts Health NHS Trust, London, United Kingdom. Electronic address: shanti.vijayaraghavan@nhs.net.
4Department of Diabetes & Metabolism, St Bartholomew's and the Royal London Hospital, Barts Health NHS Trust, London, United Kingdom. Electronic address: chrisgarrett@nhs.net.
5Department of Diabetes & Metabolism, St Bartholomew's and the Royal London Hospital, Barts Health NHS Trust, London, United Kingdom. Electronic address: tahseen.chowdhury@nhs.net.
6Queen Mary University London, London, United Kingdom. Electronic address: john.anderson@nhs.net.
7Department of Diabetes & Metabolism, St Bartholomew's and the Royal London Hospital, Barts Health NHS Trust, London, United Kingdom. Electronic address: bobby.huda1@nhs.net.