• 1
    Cabrera RM, Hill DS, Etheredge AJ, Finnell RH. Investigations into the etiology of neural tube defects. Birth Defects Res C Embryo Today 2004;72:33044.
  • 2
    Steegers-Theunissen RP, Smithells RW, Eskes TK. Update of new risk factors and prevention of neural-tube defects. Obstet Gynecol Surv 1993;48:28793.
  • 3
    De Wals P, Tairou F, Van Allen MI, Uh SH, Lowry RB, Sibbald B, et al. Reduction in neural-tube defects after folic acid fortification in Canada. N Engl J Med 2007;357:13542.
  • 4
    Lumley J, Watson L, Watson M, Bower C. Periconceptional supplementation with folate and/or multivitamins for preventing neural tube defects. Cochrane Database Syst Rev 2001;CD001056.
  • 5
    Carmichael SL, Shaw GM, Schaffer DM, Laurent C, Selvin S. Dieting behaviors and risk of neural tube defects. Am J Epidemiol 2003;158:112731.
  • 6
    Honein MA, Paulozzi LJ, Mathews TJ, Erickson JD, Wong LY. Impact of folic acid fortification of the US food supply on the occurrence of neural tube defects. JAMA 2001;285:29816.
  • 7
    Ray JG, Meier C, Vermeulen MJ, Boss S, Wyatt PR, Cole DE. Association of neural tube defects and folic acid food fortification in Canada. Lancet 2002;360:20478.
  • 8
    Groenen PM, Van Rooij IA, Peer PG, Gooskens RH, Zielhuis GA, Steegers-Theunissen RP. Marginal maternal vitamin B12 status increases the risk of offspring in spina bifida. Am J Obstet Gynecol 2004;191:1117.
  • 9
    Groenen PM, Van Rooij IA, Peer PG, Ocke MC, Zielhuis GA, Steegers-Theunissen RP. Low maternal dietary intakes of iron, magnesium and niacin are associated with spina bifida in the offspring. J Nutr 2004;134:15161522.
  • 10
    Botto LD, Lisi A, Bower C, Canfield MA, Dattani N, De Vigan C, et al. Trends of selected malformations in relation to folic acid recommendations and fortification: an international assessment. Birth Defects Res A Clin Mol Teratol 2006;76:693705.
  • 11
    Hu FB, Rimm EB, Smith-Warner SA, Feskanich D, Stampfer MJ, Ascherio A, et al. Reproducibility and validity of dietary patterns assessed with a food-frequency questionnaire. Am J Clin Nutr 1999;69:2439.
  • 12
    Hoffmann K, Schulze MB, Achienkiewitz A, Nothlings U, Boeing H. Application of a new statistical method to derive dietary patterns in nutritional epidemiology. Am J Epidemiol 2003;159:93544.
  • 13
    Hu FB, Rimm EB, Stampfer MJ, Ascherio A, Spiegelman D, Willett WC. Prospective study of major dietary patterns and the risk of coronary heart disease in men. Am J Clin Nutr 2000;72:91221.
  • 14
    Kerver JM, Yang EJ, Bianchi L, Song WO. Dietary patterns associated with risk factors for cariovascular disease in healthy US adults. Am J Clin Nutr 2003;78:110310.
  • 15
    Weikert C, Hoffmann K, Dierkes J, Zyriax BC, Klipstein-Grobusch K, Schulze MB, et al. A homocysteine metabolism-related dietary pattern and the risk of coronary heart disease in two independent German study populations. J Nutr 2005;135:19818.
  • 16
    Kaaks R, Ribole E. Validation and calibration of dietary intake measurements in the EPIC project: methodological considerations. European Prospective Investigation into Cancer and Nutrition. Int J Epidemiol 1997;26 (Suppl 1):S1525.
  • 17
    Ocke MC, Bueno-de-Mesquita HB, Pols MA, Smit HA, van Staveren WA, Kromhout D. The Dutch EPIC food frequency questionnaire. II. Relative validity and reproducibility for nutrients. Int J Epidemiol 1997;26 (Suppl 1):S4958.
  • 18
    Netherlands Nutrition Center. NEVO: Dutch Food Composition Table 1998. The Hague, the Netherlands: Netherlands Nutrition Center, 1998.
  • 19
    Netherlands Nutrition Center. NEVO: Dutch Food Composition Table 2001. The Hague, the Netherlands: Netherlands Nutrition Center, 2001.
  • 20
    Willett WC. Nutritional Epidemiology. New York, NY: Oxford University Press, 1998.
  • 21
    Devine CM, Bove CF, Olson CM. Continuity and change in women’s weight orientations and lifestyle practices through pregnancy and the postpartum period: the influence of life course trajectories and transitional events. Soc Sci Med 2000;50:56782.
  • 22
    Leck I, Iles CA, Sharman IM, Toe T, Wadsworth GR. Proceedings: a study of the extent to which maternal nutrition after delivery reflects the situation in early pregnancy. Br J Prev Soc Med 1974;28:66.
  • 23
    Riboli E, Tionolo P, Kaaks R, Shore RE, Casagrande C, Pasternack BS. Reproducibility of a food frequency questionnaire used in the New York University Women’s Health Study: effect of self-selection by study subjects. Eur J Clin Nutr 1997;51:43742.
  • 24
    Kuemmerle SC, Boltinghouse GL, Delby SM, Lane TL, Simondsen RP. Automated assay of vitamin B-12 by the Abbott IMx analyzer. Clin Chem 1992;38:20737.
  • 25
    Molloy AM, Scott JM. Microbiological assay for serum, plasma, and red cell folate using cryopreserved, microtiter plate method. Methods Enzymol 1997;281:4353.
  • 26
    Schrijver J, Speek AJ, Schreurs WH. Semi-automated fluorometric determination of pyridoxal-5-phosphate (vitamin B6) in whole blood by high-performance liquid chromatography (HPLC). Int J Vitam Nutr Res 1981;51:216222.
  • 27
    Te Poele-Pothoff MT, Van den Berg M, Franken DG, Boers GH, Jakobs C, De Kroon IF, et al. Three different methods for the determination of total homocysteine in plasma. Ann Clin Biochem 1995;32:218220.
  • 28
    Slimani N, Fahey M, Welch AA, Wirfalt E, Stripp C, Bergstrom E, et al. Diversity of dietary patterns observed in the European Prospective Investigation into Cancer and Nutrition (EPIC) project. Public Health Nutr 2002;5:131128.
  • 29
    Willett WC, Howe GR, Kushi LH. Adjustment for total energy intake in epidemiologic studies. Am J Clin Nutr 1997;65 (4 Suppl):1220S8S; discussion 1229S–1231S.
  • 30
    ter Braak CJ, Smilauer P. CANOCO Reference Manual and User’s Guide to Canonco for Windows: Software for Canonical Community Ordination (version 4). Ithaca, NY: Microcomputer Power, 1992.
  • 31
    Winkels RM, Brouwer IA, Siebelink E, Katan MB, Verhoef P. Bioavailability of food folates is 80% of that of folic acid. Am J Clin Nutr 2007;85:46573.
  • 32
    Trichopoulou A, Lagiou P. Healthy traditional Mediterranean diet: an expression of culture, history, and lifestyle. Nutr Rev 1997;55:3839.
  • 33
    Buckley AJ, Jaquiery AL, Harding JE. Nutritional programming of adult disease. Cell Tissue Res 2005;322:739.