title: Prenatal screening for neural tube defects and chromosome abnormalities: the complexities of program evaluation.
authors.forename: E B
authors.initials: EB
authors.lastname: Hook
authors.forename: D K
authors.initials: DK
authors.lastname: Waller
mesh_terms: D000649:Amniocentesis / Q000191:economics; D002869:Chromosome Aberrations / Q000175:diagnosis; D025063:Chromosome Disorders; D003362:Cost-Benefit Analysis; D003657:Decision Making; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000191:economics; D015397:Program Evaluation; D011640:Public Policy