1. Director, Division of Country Health Programmes, World Health Organization Regional Office for Europe, Copenhagen, Denmark
2. Consultant, World Health Organization Regional Office for Europe, Copenhagen, Denmark. Correspondence:
3. Consultant, World Health Organization Regional Office for Europe, Copenhagen, Denmark
4. Programme Manager, Child and Adolescent Health, World Health Organization Regional Office for Europe, Copenhagen, Denmark
5. Consultant, World Health Organization Regional Office for Europe, Copenhagen, Denmark; Ph.D student, University Witten Herdecke Faculty of Medicine, Witten, Germany