1 Department of Diabetes & Endocrinology, University College London Hospitals (UCLH) NHS Foundation Trust, 3rd Floor Central Wing, 250 Euston Road, London, NW1 2PG, UK. sofia.llahana@uclh.nhs.uk.
2 Centre for Behavioral Medicine, UCL, London, UK. sofia.llahana@uclh.nhs.uk.
3 School of Health and Social Care, London South Bank University, London, UK.