1. University of Lausanne, Lausanne, Switzerland
2. Department of Health Sciences, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
3. Department of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health Organisation, Geneva, Switzerland
4. TNO Child Health, Leiden, The Netherlands
5. Erasmus School of Social and Behavioural Sciences, Erasmus University Rotterdam, Rotterdam, The Netherlands
6. Department of Sociology and Interuniversity for Social Science Theory and Methodology (ICS), University of Groningen, Groningen, The Netherlands