Related by context. Frequent words. (Click for all words.) 63 congenital abnormalities 62 neural tube defect 62 perinatal mortality 61 congenital malformations 60 cryptorchidism 60 prepubertal 60 liver transplant recipients 60 spontaneous abortions 60 retrospective cohort study 60 caesarean delivery 60 IVF cycles 59 weeks gestation 59 vaginal deliveries 59 cesarean delivery 59 congenital anomalies 58 neonates 58 premenopausal breast cancer 58 birthweight 58 prospective cohort 57 placebo controlled trials 57 premenopausal 57 hypospadias 57 elevated CRP 57 multivariate analyzes 57 pregnancies 57 oophorectomy 57 hyperbilirubinemia 56 placebo controlled studies 56 serum concentrations 56 cesarean deliveries 56 subgroup analyzes 56 breastfed infants 56 ultrasound examinations 56 folate intake 56 BRCA2 mutations 56 dietary intakes 56 % CI #.#-#.# [007] 56 endometrial cancers 56 venous thrombosis 55 vertebral fracture 55 preterm delivery 55 Biopsies 55 preterm infants 55 confidence interval #.#-#.# 55 embryo transfers 55 CMV infection 55 pre menopausal 55 substudy 55 undergoing IVF 55 VUR 55 breast carcinoma 55 cesareans 55 unexplained infertility 55 transvaginal ultrasound 54 MetS 54 postoperative complications 54 febrile seizure 54 breastfed babies 54 preterm babies 54 coronary angiography 54 RCTs 54 biochemical recurrence 54 bariatric procedures 54 progestogen 54 prevalences 54 echocardiographic 54 nmol L 54 cystectomy 54 preeclampsia 54 chorionic villus sampling 54 randomized trials 54 thromboembolism 54 gestational age 54 contralateral breast cancer 54 epithelial ovarian cancer 54 Uterine fibroids 53 Caesarean delivery 53 trisomy 53 EBRT 53 febrile seizures 53 colorectal adenomas 53 sonographic 53 androgen deprivation 53 caesareans 53 serum uric acid 53 ovarian stimulation 53 nondiabetic 53 low birthweight 53 preterm 53 seropositive 53 univariate analysis 53 neonate 53 BRCA2 mutation 53 placebo controlled clinical trials 53 lipid lowering therapy 52 valacyclovir 52 resections 52 premenopausal women 52 KRAS mutations 52 vaginal delivery 52 ectopic pregnancies