Methylmalonic acid and homocysteine assessment in the detection of vitamin B12 deficiency in patients with bilateral visual loss.
Pott, Jan W. R. 1; Klein Wassink-Ruiter, Jolien S. 2; van Vliet, Annemiek 1
[Letter] Acta Ophthalmologica. 90(3):e252-e253, May 2012.

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