A significant trend was found when comparing the age of the children in each study.
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Food sources of zinc and nutritional status with usual dietary zinc intake in Korean toddlers and preschool children.
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The sentences
These data show an increasing trend in zinc intake among children aged 1–5 yrs.
The variation ratio of South African children [ 18 ] showed a trend consistent with those in 2 previous studies [ 16 , 19 ].