title: Estimating an individual's risk of having a fetus with open spina bifida and the value of repeat alpha-fetoprotein testing. Fourth report of the UK collaborative study on alpha-fetoprotein in relation to neural tube defects.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis; D000704:Analysis of Variance; D000757:Anencephaly / Q000175:diagnosis / Q000453:epidemiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D008591:Meningomyelocele / Q000175:diagnosis / Q000453:epidemiology*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012306:Risk; D000509:alpha-Fetoproteins / Q000032:analysis* / Q000097:blood
chemical_list: D000509:alpha-Fetoproteins