title: Screening for open neural tube defects from 21 to 25 weeks' gestation: the Manitoba experience.
authors.forename: Natalie K
authors.initials: NK
authors.lastname: Björklund
authors.forename: Karen M
authors.initials: KM
authors.lastname: MacDonald
authors.forename: Jane A
authors.initials: JA
authors.lastname: Evans
authors.forename: Carol E
authors.initials: CE
authors.lastname: Schneider
authors.forename: Bernard N
authors.initials: BN
authors.lastname: Chodirker
mesh_terms: D005260:Female; D005865:Gestational Age; D006801:Humans; D008350:Manitoba; D008403:Mass Screening / Q000379:methods* / Q000592:standards; D009436:Neural Tube Defects / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods* / Q000592:standards; D015995:Prevalence; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins