1. Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
2. Research Unit of General Practice, Aarhus University, Aarhus, Denmark
3. Steno Diabetes Center Aarhus, Aarhus, Denmark
4. Department of Public Health, Aarhus University, Aarhus, Denmark
5. Danish Diabetes Academy, Odense, Denmark
6. Clinical Epidemiology, Steno Diabetes Center Copenhagen, Gentofte, Denmark
7. National Institute of Public Health, University of Southern Denmark, Odense, Denmark
8. Department of Neurology, Aarhus University Hospital, Aarhus, Denmark