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Comparison of the Efficacy of Calcium-cholecalciferol Foodstuffs and Calcium-cholecalciferol Supplement
This study is conducted in two phases. At the first phase, the prevalence of vitamin D insufficiency in primary school-children in Tehran is determined during the cold seasons of 2008. Then, the efficacy of calcium-vitamin D-fortified milk, -orange juice and supplement is compared in six selected primary schools.
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