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Vugteveen I, Hoeksma M, Monsen AB, Fokkema MR, Reijngoud D, van Rijn M, van Spronsen FJ. Serum vitamin B12 concentrations within reference values do not exclude functional vitamin B12 deficiency in PKU patients of various ages. Molecular Genetics and Metabolism. 2011 Jan;102(1):13–7. doi: 10.1016/j.ymgme.2010.07.004. |