Direct high-performance liquid chromatography analysis of p-hydroxyphenyl-phenylhydantoin glucuronide, the final metabolite of phenytoin, in human serum and urineVREE, T. B; STEEGERS-THEUNISSEN, R. P. M; BAARS, A. M et al.Journal of chromatography. Biomedical applications. 1990, Vol 526, Num 2, pp 581-589, issn 0378-4347Article

Maternal periconceptional biochemical and hematological parameters, vitamin profiles and pregnancy outcomeDE WEERD, S; STEEGERS-THEUNISSEN, R. P. M; DE BOO, T. M et al.European journal of clinical nutrition. 2003, Vol 57, Num 9, pp 1128-1134, issn 0954-3007, 7 p.Article

Does folic acid and zinc sulphate intervention affect endocrine parameters and sperm characteristics in men?EBISCH, I. M. W; PIERIK, F. H; DE JONG, F. H et al.International journal of andrology (Print). 2006, Vol 29, Num 2, pp 339-345, issn 0105-6263, 7 p.Article

Coeliac disease and reproductive disorders: a neglected associationROSTAMI, K; STEEGERS, E. A. P; WONG, W. Y et al.European journal of obstetrics, gynecology, and reproductive biology. 2001, Vol 96, Num 2, pp 146-149, issn 0301-2115Article

Maternal and fetal levels of methionine and homocysteine in early human pregnancySTEEGERS-THEUNISSEN, R. P. M; WATHEN, N. C; ESKES, T. K. A. B et al.British journal of obstetrics and gynaecology (Print). 1997, Vol 104, Num 1, pp 20-24, issn 0306-5456Article

Atrial natriuretic peptide in the first gestational trimester : a longitudinal studySTEEGERS, E. A. P; STEEGERS-THEUNISSEN, R. P. M; JONGSMA, H. W et al.Gynecologic and obstetric investigation. 1991, Vol 31, Num 4, pp 246-248, issn 0378-7346, 3 p.Article

Homocysteine-lowering effect of 500 μg folic acid every other day versus 250 μg/dayBROUWER, I. A; VAN ROOIJ, I. A. L. M; VAN DUSSELDORP, M et al.Annals of nutrition and metabolism. 2000, Vol 44, Num 5-6, pp 194-197, issn 0250-6807Article

Dietary folate from vegetables and citrus fruit decreases plasma homocysteine concentrations in humans in a dietary controlled trialBROUWER, I. A; VAN DUSSELDORP, M; WEST, C. E et al.The Journal of nutrition. 1999, Vol 129, Num 6, pp 1135-1139, issn 0022-3166Article

Glutathione S-transferase alpha levels in epileptic and healthy women preconceptionally epileptic and healthy women and throughout pregnancyZUSTERZEEL, P. L. M; KNAPEN, M. F. C. M; ROES, E. M et al.Gynecologic and obstetric investigation. 1999, Vol 48, Num 2, pp 89-92, issn 0378-7346Article

Altered folate and vitamin B₁₂ metabolism in families with spina bifida offspringVAN DER PUT, N. M. J; THOMAS, C. M. G; ESKES, T. K. A. B et al.QJM (Oxford. 1994. Print). 1997, Vol 90, Num 8, pp 505-510, issn 1460-2725Article

Associations between dietary patterns and semen quality in men undergoing IVF/ICSI treatmentVUJKOVIC, M; DE VRIES, J. H; DOHLE, G. R et al.Human reproduction (Oxford. Print). 2009, Vol 24, Num 6, pp 1304-1312, issn 0268-1161, 9 p.Article

Homocysteine, glutathione and related thiols affect fertility parameters in the (sub)fertile coupleEBISCH, I. M. W; PETERS, W. H. M; THOMAS, C. M. G et al.Human reproduction (Oxford. Print). 2006, Vol 21, Num 7, pp 1725-1733, issn 0268-1161, 9 p.Article

Decreased methylene tetrahydrofolate reductase activity due to the 677C→T mutation in families with spina bifida offspringVAN DER PUT, N. M. J; VAN DEN HEUVEL, L. P; STEEGERS-THEUNISSEN, R. P. M et al.Journal of molecular medicine (Berlin. Print). 1996, Vol 74, Num 11, pp 691-694, issn 0946-2716Article

Mutated methylenetetrahydrofolate reductase as a risk factor for spina bifidaVAN DER PUT, N. M. J; STEEGERS-THEUNISSEN, R. P. M; FROSST, P et al.Lancet (British edition). 1995, Vol 346, Num 8982, pp 1070-1071, issn 0140-6736Article

Sub-50 oral contraceptives affect folate kineticsSTEEGERS-THEUNISSEN, R. P. M; VAN ROSSUM, J. M; STEEGERS, E. A. P et al.Gynecologic and obstetric investigation. 1993, Vol 36, Num 4, pp 230-233, issn 0378-7346Article

Elevated folate levels in amniotic fluid after oral supplementationSTEEGERS-THEUNISSEN, R. P. M; STEEGERS, E. A. P; DE BOER, R et al.European journal of obstetrics, gynecology, and reproductive biology. 1990, Vol 36, Num 3, pp 283-291, issn 0301-2115, 9 p.Conference Paper

High maternal vitamin E intake by diet or supplements is associated with congenital heart defects in the offspringSMEDTS, H. P. M; DE VRIES, J. H; RAKHSHANDEHROO, M et al.BJOG (Oxford. Print). 2009, Vol 116, Num 3, pp 416-423, issn 1470-0328, 8 p.Article

Placental folate transport and binding are not impaired in pregnancies complicated by fetal growth restrictionBISSELING, T. M; STEEGERS, E. A. P; VAN DEN HEUVEL, J. J. M et al.Placenta (Eastbourne). 2004, Vol 25, Num 6, pp 588-593, issn 0143-4004, 6 p.Article

Male factor subfertility : possible causes and the impact of nutritional factorsWAI YEE WONG; THOMAS, C. M. G; MERKUS, J. M. W. M et al.Fertility and sterility. 2000, Vol 73, Num 3, pp 435-442, issn 0015-0282Conference Paper

Maternal hyperhomocysteinemia : a risk factor for neural-tube defects ?STEEGERS-THEUNISSEN, R. P. M; BOERS, G. H. J; TRIJBELS, F. J. M et al.Metabolism, clinical and experimental. 1994, Vol 43, Num 12, pp 1475-1480, issn 0026-0495Article

Study on the presence of homocysteine in ovarian follicular fluidSTEEGERS-THEUNISSEN, R. P. M; STEEEGERS, E. A. P; THOMAS, C. M. G et al.Fertility and sterility. 1993, Vol 60, Num 6, pp 1006-1010, issn 0015-0282Article

Low-dose folic acid supplementation does not influence plasma methionine concentrations in young non-pregnant womenBROUWER, I. A; VAN DUSSELDORP, M; DURAN, M et al.British journal of nutrition. 1999, Vol 82, Num 2, pp 85-89, issn 0007-1145Article

Nonsyndromic orofacial clefts : Association with Maternal hyperhomocysteinemiaWAI YEE WONG; ESKES, T. K. A. B; KUIJPERS-JAGTMAN, A.-M et al.Teratology (Philadelphia, PA). 1999, Vol 60, Num 5, pp 253-257, issn 0040-3709Article

Multiple birth prevalence in the Netherlands : Impact of maternal age and assisted reproductive techniquesSTEEGERS-THEUNISSEN, R. P. M; ZWERTBROEK, W. M; HUISJES, A. J. M et al.Journal of reproductive medicine. 1998, Vol 43, Num 3, pp 173-179, issn 0024-7758Article

Factors influencing the risk of abnormal pregnancy outcome in epileptic women : a multi-centre prospective studySTEEGERS-THEUNISSEN, R. P. M; RENIER, W. O; BORM, G. F et al.Epilepsy research. 1994, Vol 18, Num 3, pp 261-269, issn 0920-1211Article