1. The Danish Centre for Prevention of Thyroid Diseases (DanThyr), Glostrup, Denmark.
2. The Danish Centre for Prevention of Thyroid Diseases (DanThyr), Glostrup, Denmark; Department of Endocrinology, Aalborg Hospital, Aalborg, Denmark.
3. Department of Internal Medicine I, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark; The Danish Centre for Prevention of Thyroid Diseases (DanThyr), Glostrup, Denmark.
4. The Danish Centre for Prevention of Thyroid Diseases (DanThyr), Glostrup, Denmark; Institute of Food Safety and Nutrition, The Danish Veterinary and Food Administration, Soeborg, Denmark.
5. Centre for Preventive Medicine, Glostrup Hospital, University of Copenhagen, Copenhagen, Denmark; The Danish Centre for Prevention of Thyroid Diseases (DanThyr), Glostrup, Denmark.