A cross-sectional survey on status of nutrition and vitamin D dificinecy among nine years old children at primary schools in Haiduong city

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Objectives: To examine the nutritional status and the prevalence of vitamin D deficiency of nine years old children in primary schools. Subjects and methods: A cross-sectional study was performed on 375 nine years old children who were not puberty in 3 primary schools in Haiduong city. Subjects were measured body weight, height and examined for vitamin D deficiency based on serum 25(OH)D concentration.

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