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  • 1
    Institute of Medicine. Dietary Reference Intakes for thiamin, riboflavin, niacin, vitamin B6, folate, vitamin B12, pantothenic acid, biotin, and choline. Washington , D.C. : National Academy Press; 2000.
  • 2
    Black AK, Allen LH, Pelto GH, de Mata MP, Chavez A. Iron, vitamin B-12 and folate status in Mexico: associated factors in men and women and during pregnancy and lactation. J Nutr. 1994;124:11791188.
  • 3
    Specker BL, Brazerol W, Ho ML, Norman EJ. Urinary methylmalonic acid excretion in infants fed formula or human milk. Am J Clin Nutr. 1990;51: 209211.
  • 4
    Allen LH, Rosado JL, Casterline JE, Martinez H, Lopez P, Munoz E, Black AK. Vitamin B-12 deficiency and malabsorption are highly prevalent in rural Mexican communities. Am J Clin Nutr. 1995; 62:10131019.
  • 5
    Villalpando S, Montalvo-Velarde I, Zambrano N, Garcia-Guerra A, Ramirez-Silva CI, Shamah-Levy T, Rivera JA. Vitamins A, C and folate status in Mexican children under 12 years and women 12–49 years: a probabilistic national survey. Salud Pub Mex. 2003: S508S519.
  • 6
    Casterline JE, Allen LH, Ruel MT. Vitamin B-12 deficiency is very prevalent in lactating Guatemalan women and their infants at three months postpar-tum. J Nutr. 1997;127:19661972.
  • 7
    Anaya M, Begin F, Brown KH, Peerson JM, Torun B, Allen LH. The high prevalence of vitamin B12 deficiency in Guatemalan infants is associated with a higher intake of breast milk, and with poor quality complementary food. FASEB J. 2004; 18:1248A.
  • 8
    Rogers LM, Boy E, Miller JW, Green R, Casterline-Sabel JE, Allen LH. High prevalence of cobalamin deficiency in Guatemalan school children: associations with low plasma holotranscobalamin II, and elevated serum methylmalonic acid and plasma homocysteine concentrations. Am J Clin Nutr. 2003; 77:433440.
  • 9
    Rogers LM, Boy E, Miller JW, Green R, Rodriguez M, Chew F, Allen LH. Predictors of cobalamin deficiency in Guatemalan school children: diet, Helico-bacter pylori or bacterial overgrowth J Pediatr Gastroenterol Nutr. 2003;36:2736.
  • 10
    Allen LH, Penland JG, Boy E, DeBaessa Y, Rogers LM. Cognitive and neuromotor performance of Guatemalan schoolers with deficient, marginal and normal plasma vitamin B-12. FASEB J. 1999; 13:A544.
  • 11
    Penland JG, Allen LH., Boy E, DeBaessa Y, Rogers LM. Adaptive functioning, behavioral problems and school performance of Guatemalan school children with deficient, marginal and normal plasma B-12. FASEB J. 2000; 14:A561.
  • 12
    Arnaud J, Fleites-Mestre P, Chassagne M, et al. Vitamin B intake and status in healthy Havana men, 2 years after the Cuban neuropathy epidemic. Br J Nutr. 2001;85:741748.
  • 13
    Olivares M, Hertrampf E, Capurro MT, Wegner D. Prevalence of anemia in elderly subjects living at home: role of micronutrient deficiency and inflammation. Eur J Clin Nutr. 2000;54:834839.
  • 14
    Hirsch S, de la Maza P, Barrera G, Gattas V, Petermann M, Bunout D. The Chilean flour folic acid fortification program reduces serum homocysteine levels and masks vitamin B-12 deficiency in elderly people. J Nutr. 2002;132:289291.