1. Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, England, UK
2. Department of Global Health & Social Medicine, King’s College London, London, England, UK
3. Department of Health Service & Population Health, King’s College London, London, England, UK
4. East London NHS Foundation Trust, London, England, UK
5. Department of Child and Adolescent Psychiatry, King’s College London, London, England, UK
6. Department of Psychiatry, Cambridge Health Alliance, Cambridge, Massachusetts, USA
7. Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
8. World Health Organization, Geneva, Switzerland