1. Cambridge Intellectual & Developmental Disabilities Research Group; Department of Psychiatry; University of Cambridge; Cambridge UK
2. Cambridge University Hospitals NHS Foundation Trust; Cambridge UK
3. National Institute for Health Research (NIHR) Collaborations for Leadership in Applied Health Research and Care (CLAHRC) East of England at Cambridgeshire and Peterborough NHS Foundation Trust; Cambridge UK
4. East and North Hertfordshire NHS Trust; Stevenage UK