1. School of Health and Welfare, Jönköping Academy for Improvement of Health and Welfare, Jönköping University, Jönköping, Sweden
2. Department of Behavioural Sciences, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
3. Department of Register and Statistics, National Board of Health and Welfare, Stockholm, Sweden
4. Department of Classifications and Terminology in Healthcare, Norweigan Directorate of E-health, Nordic WHO-FIC CC, Oslo, Norway