title: Letter: Calcium-fortified flour and renal stones.
mesh_terms: D002136:Calcium, Dietary / Q000009:adverse effects*; D005433:Flour / Q000009:adverse effects*; D005527:Food, Fortified / Q000009:adverse effects*; D006801:Humans; D007669:Kidney Calculi / Q000209:etiology*
chemical_list: D002136:Calcium, Dietary