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2. A meta-analysis of research into iodine and its relationship to cognitive development;Bleichrodt,1994
3. Effects of iodine deficiency on mental and psychomotor abilities;Bleichrodt;American Journal of Physiological and Anthropology,1980
4. World summit for children - mid-decade goal: iodine deficiency disorders;UNICEF/WHO,1994
5. Sustainable elimination of iodine deficiency;UNICEF,2008