1Barker, DJ & Clark, PM (1997) Foetal undernutrition and disease in later life. Rev Reprod 2, 105–112.
2Roseboom, T, de Rooij, S & Painter, R (2006) The Dutch famine and its long-term consequences for adult health. Early Hum Dev 82, 485–491.
3Wu, G, Bazer, FW, Cudd, TA, et al. (2004) Maternal nutrition and foetal development. J Nutr 134, 2169–2172.
4Steegers-Theunissen, RPM (1995) Maternal nutrition and obstetric outcome. In Clinical Obstetrics and Gynaecology. Preventive Care in Obstetrics, .
5Barker, DJ (1994) Mothers, Babies and Disease in Later Life. London: BMJ Publishing Group.
6Hoet, JJ & Hanson, MA (1999) Intrauterine nutrition: its importance during critical periods for cardiovascular and endocrine development. J Physiol 514, 617–627.
7Steegers-Theunissen, RP & Steegers, EA (2003) Nutrient–gene interactions in early pregnancy: a vascular hypothesis. Eur J Obstet Gynecol Reprod Biol 106, 115–117.
8Waterland, RA & Jirtle, RL (2004) Early nutrition, epigenetic changes at transposons and imprinted genes, and enhanced susceptibility to adult chronic diseases. Nutrition 20, 63–68.
9Heijmans, BT, Tobi, EW, Stein, AD, et al. (2008) Persistent epigenetic differences associated with prenatal exposure to famine in humans. Proc Natl Acad Sci U S A 105, 17046–17049.
10Tamura, T & Picciano, MF (2006) Folate and human reproduction. Am J Clin Nutr 83, 993–1016.
11Bailey, LB & Gregory, JF III (1999) Folate metabolism and requirements. J Nutr 129, 779–782.
12MRC Vitamin Study Research Group (1991) Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. Lancet 338, 131–137.
13Czeizel, AE & Dudas, I (1992) Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation. N Engl J Med 327, 1832–1835.
14Hernandez-Diaz, S, Werler, MM, Walker, AM, et al. (2000) Folic acid antagonists during pregnancy and the risk of birth defects. N Engl J Med 343, 1608–1614.
15Hibbard, BM (1964) The role of folic acid in pregnancy; with particular reference to anaemia, abruption and abortion. J Obstet Gynaecol Br Commonw 71, 529–542.
16Steegers-Theunissen, RP, Boers, GH, Blom, HJ, et al. (1992) Hyperhomocysteinaemia and recurrent spontaneous abortion or abruptio placentae. Lancet 339, 1122–1123.
17de Bree, A, van Dusseldorp, M, Brouwer, IA, et al. (1997) Folate intake in Europe: recommended, actual and desired intake. Eur J Clin Nutr 51, 643–660.
18Botto, LD, Lisi, A, Robert-Gnansia, E, et al. (2005) International retrospective cohort study of neural tube defects in relation to folic acid recommendations: are the recommendations working? Br Med J 330, 571.
19Baumslag, N, Edelstein, T & Metz, J (1970) Reduction of incidence of prematurity by folic acid supplementation in pregnancy. Br Med J 1, 16–17.
20Goldenberg, RL, Tamura, T, Cliver, SP, et al. (1992) Serum folate and foetal growth retardation: a matter of compliance? Obstet Gynecol 79, 719–722.
21Iyengar, L & Rajalakshmi, K (1975) Effect of folic acid supplement on birth weights of infants. Am J Obstet Gynecol 122, 332–336.
22Rolschau, J, Date, J & Kristoffersen, K (1979) Folic acid supplement and intrauterine growth. Acta Obstet Gynecol Scand 58, 343–346.
23Rolschau, J, Kristoffersen, K, Ulrich, M, et al. (1999) The influence of folic acid supplement on the outcome of pregnancies in the county of Funen in Denmark. Part I. Eur J Obstet Gynecol Reprod Biol 87, 105–110.
24Scholl, TO, Hediger, ML, Schall, JI, et al. (1996) Dietary and serum folate: their influence on the outcome of pregnancy. Am J Clin Nutr 63, 520–525.
25Tamura, T, Goldenberg, RL, Freeberg, LE, et al. (1992) Maternal serum folate and zinc concentrations and their relationships to pregnancy outcome. Am J Clin Nutr 56, 365–370.
26Neggers, YH, Goldenberg, RL, Tamura, T, et al. (1997) The relationship between maternal dietary intake and infant birthweight. Acta Obstet Gynecol Scand 165, Suppl., 71–75.
27Fawzi, WW, Msamanga, GI, Urassa, W, et al. (2007) Vitamins and perinatal outcomes among HIV-negative women in Tanzania. N Engl J Med 356, 1423–1431.
28Ronnenberg, AG, Goldman, MB, Chen, D, et al. (2002) Preconception homocysteine and B vitamin status and birth outcomes in Chinese women. Am J Clin Nutr 76, 1385–1391.
29Sinclair, KD, Allegrucci, C, Singh, R, et al. (2007) DNA methylation, insulin resistance, and blood pressure in offspring determined by maternal periconceptional B vitamin and methionine status. Proc Natl Acad Sci U S A 104, 19351–19356.
30Rosenquist, TH & Finnell, RH (2001) Genes, folate and homocysteine in embryonic development. Proc Nutr Soc 60, 53–61.
31Jaddoe, VW, Bakker, R, van Duijn, CM, et al. (2007) The Generation R Study Biobank: a resource for epidemiological studies in children and their parents. Eur J Epidemiol 22, 917–923.
32Jaddoe, VW, Mackenbach, JP, Moll, HA, et al. (2006) The Generation R Study: design and cohort profile. Eur J Epidemiol 21, 475–484.
33Voedingsraad/Gezondheidsraad (1992) Advies inzake Foliumzuurvoorziening in relatie tot neuralebuisdefecten. Den Haag: Voorlichtingsbureau voor de Voeding.
34Voedingsraad/Gezondheidsraad (1993) Vervolgadvies inzake Foliumzuurvoorziening in relatie tot neuralebuisdefecten. Den Haag: Voorlichtingsbureau voor de Voeding.
35Verburg, BO, Steegers, EA, De Ridder, M, et al. (2008) New charts for ultrasound dating of pregnancy and assessment of foetal growth: longitudinal data from a population-based cohort study. Ultrasound Obstet Gynecol 31, 388–396.
36Hadlock, FP, Harrist, RB, Sharman, RS, et al. (1985) Estimation of foetal weight with the use of head, body, and femur measurements – a prospective study. Am J Obstet Gynecol 151, 333–337.
37Bleker, OP, Buimer, M, van der Post, JA, et al. (2006) Ted (G.J.) Kloosterman: on intrauterine growth. The significance of prenatal care. Studies on birth weight, placental weight and placental index. Placenta 27, 1052–1054.
38Kloosterman, GJ (1970) On intrauterine growth. The significance of prenatal care. Int J Gynaecol Obstet 8, 895–912.
39Statistics Netherlands (2004) Standaard onderwijs indeling 2003. Voorburg/Heerlen: Statistics Netherlands.
40Statistics Netherlands (2004) Allochtonen in Nederland 2004. Voorburg/Heerlen: Statistics Netherlands.
41Kramer, MS (1987) Determinants of low birth weight: methodological assessment and meta-analysis. Bull World Health Organ 65, 663–737.
42Timmermans, S, Jaddoe, VW, Mackenbach, JP, et al. (2008) Determinants of folic acid use in early pregnancy in a multi-ethnic urban population in The Netherlands: The Generation R study. Prev Med 47, 427–432.
43Cunningham, FG, Gant, NF & Leveno, KJ (1997) . In Williams Obstetrics 1997, 21st ed., pp. 743–764 [Cunningham, FG, Gant, NF and Leveno, KJ, editors]. New York: Appleton and Lange.
44Palma, S, Perez-Iglesias, R, Prieto, D, et al. (2008) Iron but not folic acid supplementation reduces the risk of low birthweight in pregnant women without anaemia: a case control study. J Epidemiol Community Health 62, 120–124.
45van der Molen, EF, Verbruggen, B, Novakova, I, et al. (2000) Hyperhomocysteinemia and other thrombotic risk factors in women with placental vasculopathy. BJOG 107, 785–791.
46Nafee, TM, Farrell, WE, Carroll, WD, et al. (2008) Epigenetic control of foetal gene expression. BJOG 115, 158–168.
47Waterland, RA & Michels, KB (2007) Epigenetic epidemiology of the developmental origins hypothesis. Annu Rev Nutr 27, 363–388.
48Pennisi, E (2005) Environmental epigenomics meeting. Supplements restore gene function via methylation. Science 310, 1761.
49Kloosterman, GJ (1956) Prolonged pregnancy. Gynaecologia 142, 372–388.
50Kloosterman, GJ & Huidekoper, BL (1954) The significance of the placenta in obstetrical mortality; a study of 2000 births. Gynaecologia 138, 529–550.
51van Delft, M & Ketting, E (2002) Anticonceptiegebruik in Nederland. Houten: Bohn Stafleu van Loghum.
52Hoggatt, KJ (2003) Commentary: Vitamin supplement use and confounding by lifestyle. Int J Epidemiol 32, 553–555.
53Brantsaeter, AL, Haugen, M, Hagve, TA, et al. (2007) Self-reported dietary supplement use is confirmed by biological markers in the Norwegian Mother and Child Cohort Study (MoBa). Ann Nutr Metab 51, 146–154.
54Bendich, A (1991) . In Micronutrients in Health and in Disease Prevention, pp. 235–262 [Bendich, A and Butterworch, CE Jr, editors]. New York: Marcel Dekker.