1 WHO Collaborating Centre for International Child and Adolescent Health Policy, School of Medicine, University of St Andrews, St Andrews, United Kingdom. Electronic address: [email protected].
2 Department of Health Promotion, Sports and Leisure, School of Education, University of Iceland, Reykjavik, Iceland.
3 Faculty of Physical Culture, Palacky University Olomouc, Olomouc, Czech Republic.
4 Social Research and Information Division, Welsh Government, Cardiff, United Kingdom.
5 Department of Social and Human Sciences, EHESP School of Public Health, Rennes, France.
6 Department of Children's Studies, National University of Ireland, Galway, Ireland.
7 WHO Regional Office for Europe, Child and Adolescent Health, Copenhagen, Denmark.