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American Journal of Public Health|May 9, 2000
Effectiveness of food fortification in the United States: the case of pellagraY K Park, C T Sempos, C N Barton, et al.
The American Journal of Clinical Nutrition|August 1, 1990
Relationship between age and serum vitamin A in children aged 4-11 yC J Lewis, M A McDowell, C T Sempos, et al.
The American Journal of Clinical Nutrition|February 1, 1988
Ethnic and racial differences in serum vitamin A levels of children aged 4-11 yearsA C Looker, C L Johnson, C E Woteki, et al.
American Journal of Public Health|May 1, 1995
Evaluating food fortification options: general principles revisited with folic acidN T Crane, D B Wilson, D A Cook, et al.
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