1. International Council for Control of Iodine Deficiency Disorders (ICCIDD), United Nations International Children's Emergency Fund (UNICEF),2007
2. The Iodine Content of Foods and Diets: Norwegian Perspectives;Dahl,2009
3. Urinary excretion of iodine in Norway;Frey,1993
4. Iodine Status in Europe in 2014
5. Iodine deficiency and nutrition in Scandinavia