1Katsaros VK, Glocker FX, Hemmer B, et al. MRI of spinal cord and brain lesions in subacute combined degeneration. Neuroradiology, 1998,40(11):716.
2Yamada K, Shrier DA, Tanaka H. A case of mbacute combined degeneration: MRI findings. Neuroradiology, 1998,40(6):398.
3Eduardo R,Locatelli, Robert Laureno, et al. MR in vitamin B12 deficiency myelopathy. Can J Neurol Sci, 1999,26(1):60.
4Al-Shubaili AF, Forah SA, Hussein JM, et al. Axonal and demyelinating neuropathy with reversible proximal conduction block, an unusual feature of vitamin Bt2 deficiency. Muscle Nerve, 1998,21 (10) : 1341.
5Reynolds EH, Bottigliefi T, Lanndy M, et al. Subacute combined degeneration with high sennn vitamin B12 level and abnormal vitamin B12 binding protein. New cause of an old syndrome. Arch Neurol, 1993,50(7) : 739.
6Clarke R,Evans JG,Schneede J,et al.Vitamin B12 and folate deficiency in later life[J].Age Ageing,2004,33:34.
7Andres E,Loukili NH,Noel E,et al.Vitamin B12 (cobalamin)deficiency in elderly patients[J].CMAJ,2004,171:251.
8Obeid R,Schorr H,Eckert R,et al.Vitamin B12 status in the elderly as judged by available biochemical markers[J].Clin Chem,2004,50:238.
9Johnson MA.Nutrition and aging--practical advice for healthy eating[J].J Am Med Womens Assoc,2004,59:262.
10Lindenbaum J,Rosenberg IH,Wilson PWF,et al.Prevalence of cobalamin deficiency in the Framingham elderly population[J].Am J Clin Nutr,1994,60:2.
