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[MODERN ISSUES OF D-VITAMIN SIGNIFICANCE IN DEVELOPMENT OF FULERUM-MOVE DEVICES OF INFANTS, CHILDREN AND ADOLESCENTS ( REVIEW)].

The purpose of this review is the study of literature for the current data on the metabolism of vitamin D and its role in development of bone tissue in children. The role of the main marker enabling assessing 25(OH)D concentration in the body the reference values has been analyzed. Summarizing the literature data, we may say that vitamin D and calcium deficiencies are common worldwide, causing nutritional rickets and osteomalacia, which have a mayor impact on health of infants, children and adolescents.