1. Haringey Learning Disability Partnership, Barnet Enfield and Haringey Mental Health NHS Trust, London, UK
2. Department of Population Health Sciences, University of Leicester, Leicester, UK
3. Adult Learning Disability Service, Leicestershire Partnership NHS Trust, Leicester, UK
4. North East London NHS Foundation Trust, London, UK
5. Division of Psychiatry, University College London, London, UK
6. Centre for Addiction and Mental Health, Toronto, Canada
7. Royal Cornwall Hospitals NHS Trust, Truro, UK
8. Cornwall Intellectual Disability Equitable Research (CIDER), University of Plymouth Peninsula School of Medicine, Truro, UK
9. Peninsula Clinical Trials Unit, Faculty of Health, University of Plymouth, Truro, UK
10. Royal Children’s Hospital, Melbourne, Australia
11. Murdoch Children’s Research Institute, Melbourne, Australia
12. Department of Paediatrics, University of Melbourne, Melbourne, Australia
13. College of Life and Health Sciences, Aston School of Pharmacy, Aston University, Birmingham, UK