University of Oxford - Department of Social Policy and Intervention, University of Oxford, King’s College London, University of Oxford, Bangor University - Centre for Evidence Based Early Intervention, London School of Economics, University of Exeter, National University of Ireland, Maynooth (NUI Maynooth), Universidade de Coimbra, Utrecht University, Bangor University - Bangor University, University of Gothenburg, University of Tromso, King’s College London and King's College London - Social, Genetic and Developmental Psychiatry