Racial differences in prevalence of cobalamin and folate deficiencies in disabled elderly women.
Stabler SP, Allen RH, Fried LP, Pahor M, Kittner SJ, Penninx BW, Guralnik JM. Racial differences in prevalence of cobalamin and folate deficiencies in disabled elderly women. Am J Clin Nutr. 1999 Nov; 70(5):911-9.