A total of @ South African children ( aged @-@ y ) with iron deficiency ( ID ) were randomly divided into @ groups to receive @ ) iron plus placebo , @ ) a mixture of docosahexaenoic acid and eicosapentaenoic acid ( DHA/EPA ) plus placebo , @ ) iron plus DHA/EPA , or @ ) placebo plus placebo as oral supplements @ times/wk for @ mo. .