1 Lorntz, B, Soares, AM, Moore, SR, et al. (2006) Early childhood diarrhea predicts impaired school performance. Pediatr Infect Dis J 25, 513–520.
2 Niehaus, MD, Moore, SR, Patrick, PD, et al. (2002) Early childhood diarrhea is associated with diminished cognitive function 4 to 7 years later in children in a northeast Brazilian shantytown. Am J Trop Med Hyg 66, 590–593.
3 Stoltzfus, R, Kvalsvig, J, Chwaya, H, et al. (2001) Effects of iron supplementation and anthelmintic treatment on motor and language development of preschool children in Zanzibar: double blind, placebo controlled study. BMJ 323, 1389–1393.
4 Sungthong, R, Mo-suwan, L & Chongsuvivatwong, V (2002) Effects of haemoglobin and serum ferritin on cognitive function in school children. Asia Pac J Clin Nutr 7, 245–255.
5 Nokes, C & Bundy, DA (1994) Does helminth infection affect mental processing and academic achievement? Parasitol Today 10, 14–18.
6 Roberts, JE, Burchinal, MR & Zeisel, SA (2002) Otitis media in early childhood in relation to children's school-age language and academic skills. Pediatrics 110, 696–706.
7 Bourgeois, BF (2004) Determining the effects of antiepileptic drugs on cognitive function in pediatric patients with epilepsy. J Child Neurol 19, Suppl. 1, S15–S24.
8 Thorsdottir, I (2005) Supplement and stimulation for stunted children. Lancet 366, 1756–1758.
9 Walker, SP, Chang, SM, Powell, CA, et al. (2005) Effects of early childhood psychosocial stimulation and nutritional supplementation on cognition and education in growth-stunted Jamaican children: prospective cohort study. Lancet 366, 1804–1807.
10 Zaini, MZ, Lim, CT, Low, WY, et al. (2005) Effects of nutritional status on academic performance of Malaysian primary school children. Asia Pac J Public Health 17, 81–87.
11 Zaleha, MI, Iskandar, ZA, Khalid, AK, et al. (2000) Effect of iodized oil supplementation on thyroid hormone levels and mental performance among Orang Asli schoolchildren and pregnant mothers in an endemic goiter area in Peninsular Malaysia. Asia Pac J Clin Nutr 9, 274–281.
12 Martin, LK & Beaver, PC (1968) Evaluation of Kato thick smears technique for quantitative diagnosis of helminth infections. Am J Trop Med Hyg 17, 382–391.
13 World Health Organization (2002) Prevention and Control of Intestinal Parasitic Infections. Prevention and Control of Schistosomiasis and Soil-transmitted Helminthiasis. WHO Technical Report Series no. 912. Geneva: WHO.
14 Albonico, M, Montresor, A, Crompton, DWT, et al. (2006) Intervention for the control of soil-transmitted helminthiasis in the community. Adv Parasitol 61, 311–348.
15 Blanck, MH, Pfeiffer, CM, Caudill, SP, et al. (2003) Serum iron and iron-binding capacity: a round-robin interlaboratory comparison study. Clin Chem 49, 1672–1675.
16 Nor Aini, U, Al-Mekhlafi, HM, Azlin, M, et al. (2007) Serum iron status in Orang Asli children living in endemic areas of soil-transmitted helminthes. Asia Pac J Clin Nutr 16, 724–730.
17 World Health Organization (2001) Iron Deficiency Anaemia: Assessment, Prevention, and Control. Geneva: WHO.
18 Zalilah, MS, Jenny, TB & Nan, EJ (2000) Nutrition and educational achievement of urban primary schoolchildren in Malaysia. Asia Pac J Clin Nutr 9, 264–273.
19 Bendel, RB & Afifi, AA (1977) Comparison of stopping rules in forward regression. J Am Stat Assoc 72, 46–53.
20 Al-Mekhlafi, HM, Atiya, AS, Lim, YAL, et al. (2007) An unceasing problem: soil-transmitted helminthiases in rural Malaysian communities. Southeast Asian J Trop Med Public Health 38, 998–1007.
21 Al-Mekhlafi, HM, Surin, J, Atiya, AS, et al. (2008) Anaemia and iron deficiency anaemia among Aboriginal schoolchildren in rural Peninsular Malaysia: an update on a continuing problem. Trans R Soc Trop Med Hyg 102, 1046–1052.
22 Zaleha, MI, Hayati, AR, Rizam, AR, et al. (2003) Micronutrients and its correlation with mental performance among schoolchildren in Bario, Sarawak: a preliminary study. Med J Malaysia 58, 309–319.
23 Nokes, C, Grantham-McGregor, SM, Sawyer, AW, et al. (1992) Moderate to heavy infections of Trichuris trichiura affect cognitive function in Jamaican school children. Parasitology 104, 539–547.
24 Boivin, MJ & Giordani, B (1993) Improvements in cognitive performance for schoolchildren in Zaire, Africa, following an iron supplement and treatment for intestinal parasites. J Pediatr Psychol 18, 249–264.
25 Halterman, JS, Kaczorowski, JM, Aligne, CA, et al. (2001) Iron deficiency and cognitive achievement among school-aged children and adolescents in the United States. Pediatrics 107, 1381–1386.
26 Ezeamama, AE, Friedman, JF, Acosta, LP, et al. (2005) Helminth infection and cognitive impairment among Filipino children. Am J Trop Med Hyg 72, 540–548.
27 Soewondo, S, Husaini, MA & Pollitt, E (1989) Effects of iron deficiency on attention and learning processes in pre-school children: Bandung, Indonesia. Am J Clin Nutr 50, 667–674.
28 Aukett, MA, Parks, YA, Scott, PH, et al. (1986) Treatment with iron increases weight gain and psychomotor development. Arch Dis Child 16, 849–857.
29 Soemantri, AG, Pollitt, E & Kim, I (1985) Iron deficiency anemia and educational achievement. Am J Clin Nutr 42, 1221–1228.
30 Murray-Kolb, LE & Beard, JL (2007) Iron treatment normalizes cognitive functioning in young women. Am J Clin Nutr 85, 778–787.
31 Seshadri, S & Gopaldas, T (1989) Impact of iron supplementation on cognitive functions in preschool and school-aged children: the Indian experience. Am J Clin Nutr 50, 675–686.
32 Harahap, H, Jahari, AB, Husaini, MA, et al. (2000) Effects of an energy and micronutrient supplement on iron deficiency anaemia, physical activity, and motor and mental development in undernourished children in Indonesia. Eur J Clin Nutr 54, Suppl. 2, S114–S119.
33 Pollitt, E, Hathirat, P, Kotchabhakdi, NJ, et al. (1989) Iron deficiency and educational achievement in Thailand. Am J Clin Nutr 50, 687–697.
34 Tamura, T, Goldenberg, RL, Hou, J, et al. (2002) Cord serum ferritin concentrations and mental and psychomotor development of children at five years of age. J Pediatr 140, 165–170.
35 Lozoff, B, Jimenez, E & Wolf, AW (1991) Long-term developmental outcome of infants with iron deficiency. N Engl J Med 325, 687–694.
36 Pollitt, E & Leibel, RL (1976) Iron deficiency and behavior. J Pediatr 88, 372–381.
37 Dwork, AJ, Lawler, G, Zybert, PA, et al. (1990) An autoradiographic study of the uptake and distribution of iron by the brain of the young rat. Brain Res 518, 31–39.
38 Beard, JL (2001) Iron biology in immune function, muscle metabolism and neuronal functioning. J Nutr 131, Suppl. 2, S568–S579.
39 Cooper, ES, Bundy, DA, MacDonald, TT, et al. (1990) Growth suppression in the Trichuris dysentery syndrome. Eur J Clin Nutr 44, 138–147.