1.Semba, RD & Bloem, MW (2002) The anemia of vitamin A deficiency: epidemiology and pathogenesis. Eur J Clin Nutr 56, 271–281.
2.Sommer, A & West, KP Jr (1996) Vitamin A Deficiency: Health, Survival, and Vision. New York: Oxford University Press.
3.Sommer, A & Davidson, FR (2002) Assessment and control of vitamin A deficiency: the Annecy Accords. J Nutr 132, 9 Suppl., 2845S–2850S.
4.Bloem, MW, Wedel, M, Egger, RJ et al. (1989) Iron metabolism and vitamin A deficiency in children in northeast Thailand. Am J Clin Nutr 50, 332–338.
5.Van Nhien, N, Khan, NC, Ninh, NX et al. (2008) Micronutrient deficiencies and anemia among pre-school children in rural Vietnam. Asia Pac J Clin Nutr 17, 48–55.
6.Mejia, LA & Arroyave, G (1982) The effect of vitamin A fortification of sugar on iron metabolism in pre-school children in Guatemala. Am J Clin Nutr 36, 87–93.
7.van Poppel, G (1996) Epidemiological evidence for β-carotene in prevention of cancer and cardiovascular disease. Eur J Clin Nutr 50, Suppl. 3, S57–S61.
8.Food and Agriculture Organization of the United Nations (1988) Requirements of Vitamin A, Iron, Folate and Vitamin B12. Report of a Joint FAO/WHO Expert Consultation. FAO Food and Nutrition Series no. 23. Rome: FAO.
9.Nussenblatt, V, Mukasa, G, Metzger, A et al. (2002) Relationship between carotenoids and anaemia during acute uncomplicated Plasmodium falciparum malaria in children. J Health Popul Nutr 20, 205–214.
10.Palafox, NA, Gamble, MV, Dancheck, B et al. (203) Vitamin A deficiency, iron deficiency, and anemia among pre-school children in the Republic of the Marshall Islands. Nutrition 19, 405–408.
11.National Center for Health Statistics (1977) NCHS Growth Curves for Children, Birth–18 Years, United States. Washington, DC: US Department of Health, Education and Welfare.
12.World Health Organization (2001) Iron Deficiency Anaemia: Assessment, Prevention, and Control. Geneva: WHO.
13.International Vitamin A Consultative Group (1982) Biochemical Methodology for Assessment of Vitamin A Status. Washington, DC: The Nutrition Foundation.
14.Gamble, MV, Palafox, NA, Dancheck, B et al. (2004) Carotenoid status among pre-school children with vitamin A deficiency in the Republic of the Marshall Islands. Asia Pac J Clin Nutr 13, 336–340.
15.de Pee, S, West, CE, Permaesih, D et al. (1998) Orange fruit is more effective than are dark-green, leafy vegetables in increasing serum concentrations of retinol and beta-carotene in schoolchildren in Indonesia. Am J Clin Nutr 68, 1058–1067.
16.Gamble, MV, Palafox, NA, Dancheck, B et al. (2004) Relationship of vitamin A deficiency, iron deficiency, and inflammation to anemia among preschool children in the Republic of the Marshall Islands. Eur J Clin Nutr 58, 1396–1401.
17.Ford, ES, Gillespie, C, Ballew, C et al. (2002) Serum carotenoid concentrations in US children and adolescents. Am J Clin Nutr 76, 818–827.
18.Apgar, J, Makdani, D, Sowell, AL et al. (1996) Serum carotenoid concentrations and their reproducibility in children in Belize. Am J Clin Nutr 64, 726–730.
19.National Institute of Nutrition/UNICEF/Centers for Disease Control and Prevention (1995) Report of the National Anemia and Nutrition Risk Factor Survey, Vietnam 1995. Program Against Micronutrient Malnutrition, pp. 13–30. Hanoi: NIN, Vietnam/UNICEF–Vietnam/CDC.
20.McLaren, DS & Frigg, M (2001) Sight and Life Manual on Vitamin A Deficiency Disorders (VAD), 2nd ed. Basel: Task Force Sight and Life.
21.Khan, NC, Khoi, HH, Giay, T et al. (2002) Control of vitamin A deficiency in Vietnam: achievements and future orientation. Food Nutr Bull 23, 133–142.
22.World Health Organization (2009) Global prevalence of vitamin A deficiency in populations at risk 1995–2005. WHO Global Database on Vitamin A Deficiency. Geneva: WHO.
23.United Nations Administrative Committee on Coordination, Sub-committee on Nutrition (2000) Fourth Report on the World Nutrition Situation. Geneva: ACC/SCN in collaboration with IFPRI.
24.van der Hoek, W, De, NV, Konradsen, F et al. (2003) Current status of soil-transmitted helminths in Vietnam. Southeast Asian J Trop Med Public Health 34, Suppl. 1, 1–11.
25.Hodges, RE, Sauberlich, HE, Canham, JE et al. (1978) Hematopoietic studies in vitamin A deficiency. Am J Clin Nutr 31, 876–885.
26.Allen, LH (2002) Iron supplements: scientific issues concerning efficacy and implications for research and programs. J Nutr 132, 4 Suppl., 813S–819S.
27.Suharno, D, West, CE, Muhilal, et al. (1993) Supplementation with vitamin A and iron for nutritional anaemia in pregnant women in West Java, Indonesia. Lancet 342, 1325–1328.
28.Muslimatun, S, Schmidt, MK, Schultink, W et al. (2001) Weekly supplementation with iron and vitamin A during pregnancy increases hemoglobin concentration but decreases serum ferritin concentration in Indonesian pregnant women. J Nutr 131, 85–90.
29.Mwanri, L, Worsley, A, Ryan, P et al. (2000) Supplemental vitamin A improves anemia and growth in anemic school children in Tanzania. J Nutr 130, 2691–2696.
30.Kumwenda, N, Miotti, PG, Taha, TE et al. (2002) Antenatal vitamin A supplementation increases birth weight and decreases anemia among infants born to human immunodeficiency virus-infected women in Malawi. Clin Infect Dis 35, 618–624.