1. National Institute of Public Health, Copenhagen and Nuuk, Denmark and Greenland
2. Steno Diabetes Center, Copenhagen, Denmark
3. Primary Health Clinic, Nuuk, Greenland
4. Alcohol Unit, Copenhagen University Hospital, Hvidovre, Denmark
5. Dept. of Endocrinology and Medicine, Aalborg University Hospital, Aalborg, Denmark
6. Respiratory Unit, Dept. of Medicine I, Copenhagen University Hospital, Bispebjerg, Denmark