vit d def child
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http://www.pediatrics.org/http://www.pediatrics.org/ -
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http://www.pediatrics.org/http://pediatrics.aappublications.org/http://www.pediatrics.org/cgi/doi/10.1542/peds.2010-0533http://www.pediatrics.org/cgi/doi/10.1542/peds.2010-0533 -
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http://www.pediatrics.org/http://www.pediatrics.org/misc/reprints.shtmlhttp://www.pediatrics.org/misc/Permissions.shtmlhttp://www.pediatrics.org/