1. Department of Internal Medicine, Nuuk, Greenland
2. Department of Infectious Diseases, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Denmark
3. Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
4. Ilisimatusarfik, University of Greenland, Nuuk, Greenland
5. Queen Ingrid Primary Health Care Centre, Nuuk, Greenland
6. Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Denmark