1. Copenhagen County Research Centre for Prevention and Health, University of Copenhagen, Denmark, , Research Unit and Department for General Practice in Copenhagen, University of Copenhagen, Denmark
2. Copenhagen County Research Centre for Prevention and Health, University of Copenhagen, Denmark
3. Medical Department M of Medicine, Glostrup University Hospital, Denmark
4. Research Unit and Department for General Practice in Copenhagen, University of Copenhagen, Denmark
5. Steno Diabetes Center, Gentofte, Denmark