Vitamin B12 and folate deficiency in later life.
Clarke R, Grimley Evans J, Schneede J, Nexo E, Bates C, Fletcher A, Prentice A, Johnston C, Ueland PM, Refsum H, Sherliker P, Birks J, Whitlock G, Breeze E, Scott JM.
Clarke R, et al. Among authors: refsum h.
Age Ageing. 2004 Jan;33(1):34-41. doi: 10.1093/ageing/afg109.
Age Ageing. 2004.
PMID: 14695861