Persistence of vitamin B12 insufficiency among elderly women after folic acid food fortification
Ray, J.G. ; Vermeulen, M.J. ; Langman, L.J. ; Boss, S.C. ; Cole, D.E.C.
Clinical biochemistry, 2003-07, Vol.36 (5), p.387-391 [Periódico revisado por pares]United States: Elsevier Inc
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