1. Division of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
2. Department of Nutrition, University of Oslo, Oslo, Norway
3. Centre for Evaluation of Public Health Measures, Norwegian Institute of Public Health, Oslo, Norway
4. Department of Health Promotion and Centre for Evaluation of Public Health Measures, Norwegian Institute of Public Health, Bergen, Norway
5. Department of Social and Policy Sciences, University of Bath, Bath, UK
6. Centre for Lifecourse Nutrition, University of Agder, Kristiansand, Norway