Assertion: vitamin d | /r/RelatedTo | mean serum
Facets:
Source sentences:
text: The AI for infants 0-12 months is based on the lowest dietary intake of vitamin D associated with a mean serum 25(OH)D concentration of greater than 27.5 nmol/L (lower limit of normal) assuming little or no exposure to sunlight (FNB:IOM 1997).