Related by context. Frequent words. (Click for all words.) 63 vaginal births 63 vaginal deliveries 62 neural tube defect 62 uterine rupture 60 vaginal delivery 59 preterm 58 vaginally 57 exclusively breastfed 57 congenital abnormalities 56 congenital anomalies 56 weeks gestation 56 vaginal birth 56 birthweight 54 Cesarean 54 breastfed 54 cesarean section 54 congenital malformations 54 cesarean delivery 54 anencephaly 53 low birthweight 52 Cesarean section 52 hypospadias 52 nmol L 52 neonate 52 hypothyroid 52 gastroschisis 51 caesarean section 51 congenital defects 51 % CI #.#-#.# [006] 51 cesareans 51 malformations 51 breastfed babies 50 caesarian section 50 nondiabetic 50 gestational age 50 Caesarean delivery 50 babies 50 breast fed 50 caesarean 49 preterm babies 49 cesarean 49 born prematurely 49 difficulty conceiving 49 Birth defects 49 adenoma 48 episiotomy 48 confidence interval #.#-#.# 48 atopic 48 premenopausal 48 bacterial vaginosis 48 vertebral fracture 48 Fetuses 48 neonates 48 post operatively 48 spontaneous abortions 48 serum concentrations 48 ectopic 48 Premature babies 48 pelvic inflammatory disease 48 P = .# 48 low birthweight babies 48 menarche 47 caesareans 47 HLHS 47 resected 47 pregnancies 47 infants 47 BRCA2 mutations 47 Multiple births 47 fetal distress 47 polycystic ovary syndrome 47 Caesarean section 47 newborn infants 47 stillbirths 47 postoperative complications 47 venous thrombosis 47 preterm infants 47 laboratory abnormalities 47 births 47 preterm delivery 47 epidurals 47 ovarian cysts 47 pre eclampsia 46 bronchiolitis 46 preterm births 46 nifedipine 46 Caesarean 46 preeclampsia 46 amenorrhea 46 caesarian 46 colectomy 46 laparotomy 46 poorer prognosis 46 metabolic abnormalities 46 preterm birth 46 triplets 45 confidence interval CI 45 Caesarian section 45 ± SD 45 miscarry 45 trisomy