1. Dalla Lana School of Public Health, University of Toronto Toronto, Canada
2. Centre for Primary Care Nuuk, Greenland
3. Ilisimatusarfik-University of Greenland Nuuk, Greenland
4. National Board of Health Nuuk, Greenland
5. Department of Health and Human Development, Montana State University , Bozeman, Montana, USA
6. Sisimiut Health Center Sisimiut, Greenland
7. Epidemiology Research (AK) and Microbiological Surveillance and Research (JSJ), Statens Serum Institut Copenhagen, Denmark